when anti-sera to bovine pepsinogen and chymosin ( rennin ) was used , immunoreactive tumor cells were found in 12 of 23 gastric adenocarcinomas irrespective of the tumor subtype , degree of differentiation , or the presence or absence of intestinal metaplasia in the adjacent gastric mucosa .
C0278701
gastric adenocarcinomas
C0017136
gastric mucosa