[Gastric juice proteins in neoplastic diseases with and without involvement of the digestive system].

Gastric juice proteins were studied in normal subjects and persons with gastro-intestinal, lung and pancreatic neoplasia and chronic systemic lymphopathy and haemoblastosis, using cellulose acetate and acrylamide gel electrophoresis of the freeze-dried dialyaste and chromatography of the amino acids obtained from the hydrolysate. Definite evidence was gathered of both qualitative and quantitative changes in protein fractions. Patterns varied from one group of subjects to another, though the basic picture was the same in both intestinal and extra-intestinal conditions. An effective relationship between the diseases considered is postulated and the data are interpreted with a view to evolving other points for further investigation.