Abstract
The weight and protein patterns of anterior pituitary glands obtained from KK and C57BL (control) mice were comparatively examined; the results obtained are as follows: 1. The adenohypophysis of the KK mouse is heavier than that of C57BL mouse. 2. In acrylamide gel electrophoresis, the protein band corresponding to GH appears more intense in the KK mouse than in the C57BL mouse. These findings are interpreted in relation to the diabetic trait of the KK strain mouse.