A monoclonal antibody reactive with gastric carcinoma.

A monoclonal antibody reactive with gastric carcinomas of the stomach was established. This antibody reacted with 88% (15/17) of the scirrhous carcinomas, and 75% (6/8) of the well differentiated adenocarcinomas of the stomach tested, but did not react with normal gastric mucosa or various other normal tissues, with the exception of the mucosa of the large intestine.