Antibacterial Activity of Lincomycin and Pristinamycin: a Comparison with Erythromycin.

The secretion of gastric intrinsic factor was studied in normal subjects and in hospital patients. A considerable amount of intrinsic factor was present in gastric juice secreted in the absence of any stimulant, and this amount was normally far in excess of that required for the absorption of dietary vitamin B12' Histamine and insulin were equally effective as stimulants of gastric-intrinsic-factor secretion, but carbachol did not produce an increase in secretion above the pre-injection level. The increased secretion of intrinsic factor following either histamine or insulin preceded the secretion of both acid and pepsin.