various enzyme proteins and gastrointestinal hormones concerning gastric carcinoma and intestinal metaplasia including pepsin , ldh , afp , beta-glucuronidase , rgtp , lysozyme , ferritin , sialic acid , polyamine , cea , ca 19-9 , collage , gastrin , immunoglobulin are discussed in this paper .
C0017182
gastrointestinal hormones
C0017151
gastrin