title: [To the memory of Professor Pierre Masson, 20 years later].
mesh_terms: D002170:Canada; D004759:Enterochromaffin Cells / Q000648:ultrastructure; D005602:France; D006653:Histology / Q000266:history*; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D009369:Neoplasms / Q000648:ultrastructure
vernacular_title: A la mémoire du Professeur Pierre Masson, vingt ans après.