the distribution and time of appearance in the developing human stomach of the 4 aspartic proteinases , pepsinogen , progastricsin , slow-moving protease and cathepsin d , all present in gastric carcinoma , has been determined by the peroxidase-antiperoxidase method on formalin fixed paraffin embedded sections of fetal stomach .
C0030913
pepsinogen
C0030915
progastricsin