- A dictionary of medical eponyms

Cabot's ring bodies

Related people

They are delicate threadlike inclusions in the red blood cells in the peripheral blood of some patients with severe/megaloblastic anaemia. They may appear as rings, figures-of-eight, or twisted. They are blue-staining. Their origin is unknown. Contrary to Cabot’s belief, these structures have nothing to do with the nucleus or the nucleus’ membrane.


  • R. Clarke Cabot:
  • A guide to the clinical examinations of the blood.
    New York, 1896; 5th edition, 1904. Ring bodies (nuclear remnants?) in anaemic blood. Journal of Medical Research, 1903, 9: 15-19.
  • Karl Schleip:
    Atlas der Blutkrankheiten.
    Vienna, 1907; 2nd edition with Albert von Alder (1888-1951), Berlin and Vienna, 1928, translated into English. Hematological atlas : with a description of the technic of blood examination.
    By Priv. doz. Dr. Karl Schleip ; English adaptation of text, by Frederic E. Sondern ; with 71 coloured illustrations. New York : Rebman, 1908.

What is an eponym?

An eponym is a word derived from the name of a person, whether real or fictional. A medical eponym is thus any word related to medicine, whose name is derived from a person.

What is Whonamedit?

Whonamedit.com is a biographical dictionary of medical eponyms. It is our ambition to present a complete survey of all medical phenomena named for a person, with a biography of that person.


Whonamedit? does not give medical advice.
This survey of medical eponyms and the persons behind them is meant as a general interest site only. No information found here must under any circumstances be used for medical purposes, diagnostically, therapeutically or otherwise. If you, or anybody close to you, is affected, or believe to be affected, by any condition mentioned here: see a doctor.