1. Hering of the canals of Hering
William S. Haubrich, M.D. 
Gastroenterology 
Volume 121, Issue 6, (December 2001)
DOI: /S (01)
Copyright © 2001 American Gastroenterological Association Terms and Conditions

2. Copyright holder unknown
Copyright holder unknown. Photo obtained from the National Library of Medicine website (
Gastroenterology  , DOI: ( /S (01) )
Copyright © 2001 American Gastroenterological Association Terms and Conditions