Medical Terminology Daily (MTD) is a blog sponsored by Clinical Anatomy Associates, Inc. as a service to the medical community. We post anatomical, medical or surgical terms, their meaning and usage, as well as biographical notes on anatomists, surgeons, and researchers through the ages. Be warned that some of the images used depict human anatomical specimens.

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A Moment in History

Jean-Louis Petit

Jean Louis Petit
(1674 – 1750)

French surgeon and anatomist, Jean Louis Petit was born in Paris in on March 13, 1674.  His family rented an apartment at his house to Alexis Littre (1658 – 1726), a French anatomist. Petit became an apprentice of Littre at seven years of age, helping him in the dissections for his lectures and at an early age became the assistant in charge of the anatomic amphitheater.

Because of Petit’s dedication to anatomy and medicine, in 1690 at the age of sixteen, became a disciple of a famous Paris surgeon, Castel.

In 1692, Petit entered the French army and performed surgery in two military campaigns. By 1693 he started delivering lectures and was accepted as a great surgeon, being invited to the most difficult operations.  In 1700 he was appointed Chief Surgeon of the Military School in Paris and in the same year he received the degree of Master of Surgery from the Faculty of Paris.

In 1715 he was made a member of the Royal Academy of Sciences and an honorary member of the Royal Society of London. He was appointed by the King as the first Director General of the Royal Academy of Surgery when it was founded in 1731.

Petit’s written works are of historical importance.  “Traite des Maladies des Os” ( A Treatise on Bone Diseases);  “Traite des Maladies Chirurgicales et des Operation” (A Treatise on Surgical Diseases and their Operations” This last book was published posthumously in 1774. He also published a monograph on hemorrhage, another on lachrymal fistula, and others.

He was one of the first to perform choIecystotomy and mastoidotomy. His original tourniquet design for amputations saved many in the battlefield and the design of the same surgical instrument today has not changed much since its invention by him.

His name is remembered in the lumbar triangle, also called the "triangle of Petit", and the abdominal hernia that can ensue through that area of weakness, the lumbar hernia or "Petit's hernia".

Sources:
1. “Jean Louis Petit – A Sketch of his Life, Character, and Writings” Hayne, AP San Fran Western Lancet 1875 4: 446-454
2. “Oeuvres compl?tes de Jean-Louis Petit” 1837 Imprimerie de F. Chapoulaud
3. Extraits de l'eloge de Jean-Louis Petit Ius dans Ia seance publique de I' Academie royale de chirurgie du 26 mai 1750” Louis A. Chirurgie 2001: 126 : 475- 81


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Georg Eduard Von Rindfleisch

This article is part of the series "A Moment in History" where we honor those who have contributed to the growth of medical knowledge in the areas of anatomy, medicine, surgery, and medical research.

Georg Eduard von Rindfleisch
G.E. Rindfleisch (1836 – 1908)

Georg Eduard Von Rindfleisch (1836 – 1908), German pathologist and histologist of Bavarian nobility ancestry. Rindfleisch studied medicine in Würzburg, Berlin, and Heidelberg, earning his MD in 1859 with the thesis “De Vasorum Genesi” (on the generation of vessels) under the tutelage of Rudolf Virchow (1821 - 1902). He then continued as a assistant to Virchow in a newly founded institute in Berlin. He then moved to Breslau in 1861 as an assistant to Rudolf Heidenhain (1834–1897), becoming a professor of pathological anatomy. In 1865 he became full professor in Bonn and in 1874 in Würzburg, where a new pathological institute was built according to his design (completed in 1878), where he worked until his retirement in 1906.

He was the first to describe the inflammatory background of multiple sclerosis in 1863, when he noted that demyelinated lesions have in their center small vessels that are surrounded by a leukocyte inflammatory infiltrate.

After extensive investigations, he suspected an infectious origin of tuberculosis - even before Robert Koch's detection of the tuberculosis bacillus in 1892. Rindfleisch 's special achievement is the description of the morphologically conspicuous macrophages in typhoid inflammation. His distinction between myocardial infarction and myocarditis in 1890 is also of lasting importance.

Associated eponyms

"Rindfleisch's folds": Semilunar folds of the serous surface of the pericardium around the origin of the aorta. Also known as the ascending aortic folds.

"Rindfleisch's cells": Historical (and obsolete) name for eosinophilic leukocytes.

Personal note: G. Rindfleisch’s book “Traité D' Histologie Pathologique” 2nd edition (1873) is now part of my library. This book was translated from German to French by Dr. Frédéric Gross (1844-1927) , Associate Professor of the Medicine Faculty in Nancy, France. The book is dedicated to Dr. Theodore Billroth (1829-1894), an important surgeon whose pioneering work on subtotal gastrectomies paved the way for today’s robotic bariatric surgery. Dr. Miranda.

Sources:
1. "Stedmans Medical Eponyms" Forbis, P.; Bartolucci, SL; 1998 Williams and Wilkins
2. "Rindfleisch, Georg Eduard von (bayerischer Adel?)" Deutsche Biographie
3. "The pathology of multiple sclerosis and its evolution" Lassmann H. (1999)  Philos Trans R Soc Lond B Biol Sci. 354 (1390): 1635–40.
4. “Traité D' Histologie Pathologique” G.E. Rindfleisch Rindfleisch Rindfleisch 2nd Ed (1873) Ballieres et Fils. Paris, Translated by F Gross.


Medieval health poem

UPDATED

Cover page of Regimen Sanitatis Salernitatum c. 1480
Cover page of Regimen Sanitatis Salernitatum c. 1480

"Thou to health and vigor should attain
 Shun mighty cares, all anger deem profane
From heavy suppers and much wine abstain;
Nor trivial count it after pompous fare
To rise from the table and take to the air.
Spurn idle noonday slumbers, nor delay
The urgent call of nature to obey.
These rules if thou wilt follow to the end
Thy life to greater length thou may extend".

The original poem is written in Latin and is part of the book "Regimen Sanitatis Salernitarum" published in 1480. This book contains articles and poems by Afflacius, Bartholomeus, Copho, Ferrarius, Petronius, Johannes Platearius, and Trotula. The editor of the book was Arnold de Villa Nova. It was later translated into English.

The author of the book was Constantinus Africanus of Carthage (1020-1087). His birth and original religion is in question, some stating that he was a Sarracen, and therefore born as a Muslim. He traveled extensively in Egypt, Greece, Italy, and India. His ability to read and speak Arabic, Latin, Greek, and other languages, helped him later to be considered one of the important translators of medical books bringing lost Latin and Greek knowledge in books from Arab countries into Europe.

After arriving in Salerno, Constantinus became a monk and dedicated his life to the publication of medical translation, not hesitating to call other's works as his own.

It is considered one of the two great publications of the School of Salerno in the Medieval Ages, the other one being the "Compendium Salernitatus"

More on this wonderful book here.

Source:
"Medieval and Renaissance Medicine" B.L. Gordon 1959 Philosophical Library Inc. USA


The interesting story of “Sutures in Ancient Surgery” (1)

This article is part of the series "A Moment in History" where we honor those who have contributed to the growth of medical knowledge in the areas of anatomy, medicine, surgery, and medical research.

Folder of "Sutures in Ancient Surgery"
Folder of "Sutures in Ancient Surgery"

During a recent 2024 lecture I delivered to a group of engineers at Medtronic, I met with Jack Kennedy, an engineer, past student, and a good friend. Jack and I share a passion for medical history. He has a very interesting collection of antique sutures and books related to the topic. He gifted me a collection of antique photographic prints in a leather-like folder with gilded letters. The name of the work is “Sutures in Ancient Surgery”. Jack was kind enough to sign and dedicate this gift that now holds an important place in my library.

For those who know me, I cannot have a book without looking into its history. What I found was incredible! The findings are in the following areas and topics:

  1. The history of the Davis and Geck suture company.
    2. Lejaren à Hillier, main photographer of “Sutures in Ancient Surgery”
    3. The content of the publication, images, and controversy
    4. Missing prints

    1. The history of the Davis & Geck company

Davis & Geck (D&G) was founded in 1909 by Charles T. Davis and Fred A. Geck, along with Frank D. Bradeen, and Benjamin F. Hirsch. Interestingly, Fred Geck left the company only a few months after its formation, but the company kept his name.

Located in Brooklyn, NY., the company specialized in the development and manufacture of surgical sutures along with various other medical products. Over the years the company changed ownership and has changed its name a couple of times. In 1930, the company was acquired by American Cyanamid after a trial between Charles Davis and his wife. This particular spot in the company’s history includes a murder, prison, lovers, and a trial. If you are interested, read the story of the company at UConn’s and SNAC web pages (see “sources”).

D&G was acquired by Sherwood, and later by the Tyco Corporation where it was renamed Syneture. Tyco Healthcare became Covidien, Ltd., which was later acquired by Medtronic, where it is today.

In 1970 Davis & Geck introduced Dexon, the first synthetic absorbable suture, followed shortly by Ethicon (J&J) sutures with Vicryl. Since then, research and development in the Medtronic line of sutures makes this company one of the world leaders in wound closure.

2. Lejaren à Hillier, main photographer of “Sutures in Ancient Surgery”

Lejaren à Hillier (1880-1969), was born in Milwaukee. He studied at the School of the Chicago Art Institute; his interest was classical fine arts. His studies and activities drew him to experimenting with photography and novel techniques for the times, where he mixed photography and painting. He became a famous commercial photographer.

One of his most exciting works was that of “tableaux vivants” (living portraits), where he would stage actors and innovative lighting techniques to represent scenes that he would later edit with paintings or use different photographic development techniques to obtain the appropriate mood. His work soon caught the attention of companies that used these tableaux vivants in commercial printings for brochures or newspapers.

Hillier was approached by D&G and the project of “Sutures in Ancient Surgery” was born. Starting in 1927 and all trough 1950, D&G sales representatives would present their customers (physicians and surgeons) with the “latest” image, ensuring an open door when they showed up at the doctor’s office. The doctors were also presented with a leather-like folder to maintain their collection. The number of prints varied each year, and it is interesting to note that none were published during the long years of WWII.

According to JTH Connor, a total of eighty three portraits were published. These show medical scenes that range from prehistory, trough Egypt, Greece, Rome, the Middle Ages, the Renaissance, all the way to the 19th century. The list of individuals portrayed is itself worth of research, as all of them in one way or another influenced medicine and surgery. Albucasis, Avicenna, Celsus, Fallopius, Fabricius, Galen, Harvey, Hunter, Rhazes, and Vesalius are but some of the tableaux vivants created for D&G.

Hillier was criticized for the lack of accuracy in some of the portraits as well as the person depicted, but the ideas for the topics were not his. The consultant used by D&G to suggest the topics was Samuel Harvey (1886-1953), who himself studied under the tutelage of famous neurosurgeon and medical historian Harvey Cushing (1869-1939).

Some of the images were later published in a book by Hillier (“Surgery through the ages”, 1944) showing other tableaux made for other medical publications.

Lejaren à HillierLejaren à Hillier

Title page of "Surgery through the ages" by HillierTitle page of "Surgery through the ages" by Hillier

This article continues here: The interesting story of “Sutures in Ancient Surgery (2)"


The interesting story of “Sutures in Ancient Surgery” (2)

This article is part of the series "A Moment in History" where we honor those who have contributed to the growth of medical knowledge in the areas of anatomy, medicine, surgery, and medical research.

Folder of "Sutures in Ancient Surgery"
Folder of "Sutures in Ancient Surgery"

This article is the continuation of The interesting story of “Sutures in Ancient Surgery” (1).

3. The content of the publication, images, and controversy

Each tableaux vivant depicted a scene of history of surgery, with a short description of the individual and their accomplishments. In general, these descriptions are accurate, but very short. The objective was to allow the doctor to read the text, admire the image and leave time for the medical representative to deliver their presentation of a particular product.

Each page was printed in black and white, on a high quality paper measuring 12 by 9 ¼ inches. The paper itself was originally lightly yellowed to denote that this was an historical image. In fact, many doctors believed that these were reproductions of antique paintings, which they were not! The image itself was 6 ½ by 5 ¼ inches.

In some images it is clear that the background was painted. In fact, the image of Hyeronimus Fabricius Ab Aquapendente (157-1619) published in 1927, shamelessly copies part of the background of the 1555 title page of the Fabrica of Andreas Vesalius (1514-1564), or one of the many plagiarisms of the same book.

The controversy today lies with a number of women depicted with their nude breasts. In one case, (“Aspasia”, published in 1933) the photograph depicts five women including Aspasia, all of them showing a naked breast. Although “Sutures in Ancient Surgery” is criticized for this easy depiction of nudity, only 30% fall in this category.

Adding Aspasia of Miletus to this collection of physicians also brought criticism, not only for the nudity, but for the fact that Aspasia is a legendary figure whose life is in question as well as her place in Greek society. Some say that she was a prostitute and the regent of a house of ill repute, other say that she was a teacher of philosophy along with Socrates and that she was married to Pericles. Others say that she never existed, yet her name and life has been used in a novelized two-tome book. Why was she selected for this collection? No one knows.

Following are some images from "Sutures in Ancient Surgery".

Pierre Pigray (d.1613)Pierre Pigray (d.1613)

Walter Herman Ryff
Walter Herman Ryff

Hyeronimus Fabricius Ab Aquapendente (1537-1619)Fabricius Ab Aquapendente (1537-1619)

Yasuhoi Tambu (c. 980 A.D.)

Yasuhoi Tambu (c. 980 A.D.)

4. Missing prints

Because these prints were presented as loose-leaf items to the doctors, many of them have been lost. Some historians comment that doctors would frame these images and use them in their offices, so a complete collection of the 83 photographs is extremely difficult to find. In once case, it is known that a hospital had the complete collection framed in one of its hallways (Sobieszek, 1988) which hospital, or what happened to that collection is unknown.

Today, the “Sutures in Ancient Surgery” folders found for sale in antique libraries have a varying number of prints, all of them incomplete. Some universities list them in their libraries and in one case, they have only three prints in their collection!

My research has been able to find the names of 76 of the tableaux vivants in this collection, but I have not been able to find the names of seven of these prints.

The folder that I received from Jack Kennedy contains 75 prints, and I am looking for the last eight including that of Teodorico Borgognoni, year of printing unknown.

If you have any or know of someone that owns a few in this collection, please contact me. I prepared an PDF file with  the prints I have as well as those I do not. You can download it here.

Once again, thanks to Jack Kennedy for his addition to my collection. It has been an interesting research and I look forward to the next one!!

Sources:
1. UConn library Archives and Special Collections: Davis and Geck company records.
2. SNAC-Social Network and Archival Context: Davis and Geck Company.
3. “Soak it up: Examining bioabsorbable polymers in healthcare” Medical Plastic News
4. “The striking social tableaux vivants of Lejaren à Hillier” J.T.H. Connor. Hetkoen International
5. “Photography view; when tableaux vivants flowered in the magazines” Gene Thorton. The New York Times. March 2, 1986.
6.” Tableaux Vivants: A Long History of Recreating Art” Karolina Dzimira-Zarzycka. Daily Art May 1, 2020
7. “Medical History’s Moment in Art Photography (1920 to 1950): How Lejaren à Hillier and Valentino Sarra Created a Fashion for Scenes of Early Surgery” Journal of the History of Medicine and Allied Sciences, Volume 72, Issue 4, October 2017, Pages 381–421
8. “Aspasia” Wiki,org
9. “The Art of Persuasion: A History of Advertising Photography” Sobieszek, Robert A. 1988
10. “Aspasia” A Romance of Art and Love in Ancient Hellas” Mary J Safford German) Robert Hamerling (Translator) 1882. NY. W.S. Gottsberger, Publisher.
11. “Lejaren A. Hillier Photography Collection” University of Texas, Harry Ramson Center.


Another Vesaliana great find is now in my office

1543 Fabrica Title Page
1543 Fabrica Title Page

One of the most collectible books in medical sciences and specifically in human anatomy is “De Humani Corporis Fabrica; Libri Septem” (Seven books on the structure of the Human Body) published in 1543 by Andreas Vesalius. This book is known as the “Fabrica” among Vesaliana enthusiasts.

The story of the Fabrica is complicated and the books, research papers, paintings, statues, medals, etc. on Vesalius and the Fabrica number in the thousands.

The first edition of the Fabrica was published in 1543, it was well received and was followed by the second edition in 1555. Vesalius died in 1564 and no further editions of the Fabrica were published. There are several translations in different languages, the latest is the “New Fabrica” published in 2013. This book included annotations by Vesalius himself found in a 1555 Fabrica. This particular “Annotated Fabrica” has a history worth reading and is one of the most expensive books ever sold at an auction in February 2024 for 2.23 million US dollars.

Part of book collectibles are single pages cut off a book. This method was quite common among antiquarians in the late 1800’s and early 1900’s. As a book collector, I think it is not a good idea to destroy a great book in the quest to obtain more money selling it as individual pages.

Be that as it may, in early 2023 I was notified by my good friend Dr. Randall Wolf, one of the contributors of Clinical Anatomy Associates, of an auction by Potter and Potter where two loose pages of the 1543 Fabrica would be placed on the auction block. With his help and lots of luck, I was able to secure item 298, which was a single page of the Fabrica, page 187, one of the “muscle men”, which depicts the “Liber II, Sexta Musculorum Tabula” (Book 2, Sixth Muscle Image).

Potter and Potter Auctions June 2023Cover page of the June 2023 Potter&Potter Auction

Potterandpotter187 smItem 298 description

One of the problems that collectors face is to prove that a certain item is original, the second one is provenance (where does the item come from?).

The first question was answered in Belgium when Dr. Wolf and I visited Dr. Francis Van Glabbeek and his personal collection in June 2023 with occasion of the 2023 Vesalius Triennial Meeting in the city of Antwerp. We were able to compare in minute detail the original image and my single page, including the type of paper and the text on the opposite page. They were a perfect match, proving that this page was indeed taken of an original 1543 Fabrica.

Reviewing the 1543 Fabrica with Drs. Wolf and Van GlabbeekStudying page 187

Getting goosebumps...
Getting goosebumps...

Reviewing the 1543 Fabrica with Drs. Wolf and Van GlabbeekLooking at details...

Confirmed

Confirmed!! It is an original 1543 page!

The second question was answered by the auctioneer, as the page belonged to the library of Ronald K. Siegel, PH.D. (1943-2019), an American psychopharmacologist and associate research professor in the Department of Psychiatry and Behavioral Sciences at the University of California, Los Angeles (UCLA). Before Dr. Siegel, we do not know how or when he acquired this single leaf of the Fabrica.

The page was carefully framed by Becky Gebhart, owner of “Picture This” in Lebanon, OH, and is secured with museum-quality glass. It in now on the wall facing my desk. Here it is:

Page 187 of the 1534 FabricaPage 188, the verso of page 187 is not visible because of the frame. This page title is "Sextæ Musculorum tabulæ charactermum index" and lists the symbols on the image.

Fabrica page 188


Vesalius' Jewish friend...

Theo Dirix 
Theo Dirix

Note: The following article was recently published in Dutch by my good friend Theo Dirix. Theo is one of our "Vesaliana" contributors, and he has written or has been part of several of the articles in this website. Theo was kind enough to provide a translation of his publication for this blog. There are footnotes in the original publication and I have added them to the end of this article. Dr. Miranda


Christie’s in New York recently sealed the deal of an exceptional copy of the Fabrica, the masterpiece by Andreas Vesalius. The sound resonated widely: buyers were the alma mater of the doctor, the KULeuven (University of Louvain, Belgium), and the Flemish government.

Earlier, a copy of Vesalius’s 1538 adaptation of a teacher’s manual, with his own notes, had already gone under the hammer. This copy of the second edition of the Fabrica from 1555, also richly annotated by the author, was not allowed to escape.

Vesalius enthusiasts eagerly anticipate seeing this historical wonder with their own eyes, following the promised digitization by the KULeuven and its exhibition in their ‘experience center’.

Non-medical or non-Latinist individuals may also find Vesalius captivating. The allure of such a well-traveled, exceptionally driven, and art-loving man is infectious and timeless. The Inquisition had no control over him, and his free-spirited mind and interactions with those of differing beliefs, such as Protestants or Jews, continues to inspire today.

At the end of the First Book of the Fabrica, there is a list of names for the bones of the skeleton as Vesalius knew them: first as he himself preferred to use them, then in Greek and in the Latin of others, and finally in Hebrew. In a certain way, the latter is also the Arabic translation, so he says, as they are “almost all taken from the Hebrew translation of Avicenna by my good Jewish friend and eminent physician Lazarus de Frigeis (with whom I usually study Avicenna).” 1

The opening print of the Fabrica may even feature an image of his friend.  After all, Vesalius had one of his public dissections illustrated. 2

"A colorful crowd, rows deep, stands, hangs, and drums around the table on which a corpse is being dissected. Three quarters of almost two hundred guests are students, with about fifty doctors and other notables also in attendance."

That is how the German student Baldasar Heseler described in his diary a public dissection in Bologna, conducted by the Flemish anatomist Andreas Vesalius.

Among the attendees were likely curious individuals who also frequented public executions or animal fights. Dissections were not serene practical lessons like today. Sometimes several dissections followed each other, often chaotic and in a festive atmosphere during the carnival period: today a hanged man, tomorrow a prostitute, in between a dog.

The image Vesalius chose for his first version of the Fabrica in 1543 is more symbolic in nature. Various authors see allegories in the ninety characters, as well as historical and contemporary prominent figures and acquaintances. 3

A striking figure who is central yet isolated is a man with a long beard, red in some colored versions, wearing a truncated conical headdress such as a tarboosh or fez. He turns towards his neighbor who whispers or shouts something to him. Or is he responding to the scene unfolding beneath him with the dismissive gesture of his left hand? With understanding or disgust?

Like other guests, he wears a heavy cloak; dissections were preferably performed during the cold winter months. It may be far-fetched, but don’t those stripes on his cloak remind us of the threads of a Jewish prayer shawl? Is this “his good Jewish friend and leading physician Lazarus de Frigeis”?

In the opening print of the second version from 1555, the stripes or threads are less clear. The sharp gaze is also blurred. And isn’t that beard shorter? Things have indeed changed in twelve years.

Title Page 1543 Fabrica

Title Page 1555 Fabrica

For example, the originally naked spectator on the balcony now wears a suit. The dog, bottom right, has a goat or goat next to him: is that perhaps the devil? The pennant of the all-dominating skeleton in the center becomes a scythe in the hands of Death.

Many find the later image less appealing than the original and speculate as to the reasons: Was it created by a different and perhaps less talented artist? Was the initial woodcut set aside because it had already been extensively used? Do the alterations suggest censorship or self-censorship, perhaps with an eye towards the advancing Inquisition?

Vesalius also made numerous changes to the text in the second edition. It remains a mystery how he communicated these changes to his Basel printer, Oporinus. This curiosity extends to his annotations and the third edition he had in mind. For instance, in the second edition, he omitted all references to his friends, retaining only the mention of Lazarus de Frigeis. However, the descriptors ‘Jewish’ and ‘leading physician’ were removed. Lazarus is still described as “his good friend.” Why did the reference to Judaism have to vanish?

One explanation posits that the descriptor ‘Jew’ had become redundant. Following the perspective of a researcher who identifies Lazarus de Frigeis as Lazzaro Freschi, the son of Rabbi Raffaele Fritschke, it is thought that Lazarus converted to Christianity in 1549, assuming the name Giovanni Battista Freschi Olivi. 4

Another explanation suggests that it may have been safer at the time to avoid allusions to Jewish beliefs or conversions. According to the same source, Lazzaro Freschi and his mother moved, or were compelled to move, to the Venice ghetto in 1547.

The word ‘getto’ is Italy’s ‘contribution’ to anti-Semitism, akin to later terms such as ‘pogrom’ from Russian, ‘Endlösung’ from German, and the slogan in English today commonly heard on European streets: “From the River to the Sea”.

Vesalius, however, continued to refer to Lazarus de Frigeis as his good friend. Not only was the anatomist well-traveled, passionate about his work, and an admirer of art, he was also loyal, open-minded, and, above all, courageous.

Theo Dirix

With gratitude to Omer Steeno, Maurits Biesbrouck, and Theodoor Goddeeris

Footnotes:

1. based upon: Maurits Biesbrouck. Nederlandse vertaling van het eerste boek van Andreas Vesalius’ Fabrica 1543, handelend over het Menselijk Skelet. P. 394.
2. with differences in the frontispieces of the Fabrica’s of 1543 and 1555: https://exhibitions.lib.cam.ac.uk/vesalius/
artifacts/coloured-frontispiece-1543/, and https://library.missouri.edu/specialcollections/exhibits/show/vesalius500/fabrica/a-tale-of-two-title-pages
3. for example: C.D. O’Malley. Andreas Vesalius of Brussels 1514-1564, University of California Press, Berkeley and Los
Angeles, 1964, p. 140.
4. Toaff, Ariel. Pasque di sangue, Ebrei d’Europa e omicidi rituali, Societa editrice il Mulino, Bologna, 2007, p. 197 - 198