Abstract
1. Tryptase of gastric mucosa, liver or kidney of rabbit is activated in the presence of dialyzed ovalbumin or serum albumin solution in similar manner, while ereptase of these tissues undergoes no activation.
2. Tryptase of testicle, large intestine, or heart muscle is relatively apparent and undergoes albumin activation as well as above, but that of blind intestine, skin, brain, or striped muscle becomes first manifest after the activation with dialyzed albumin solution.
3. The degree of activation is almost constant throughout all experiments regardless of kind of tissue, and almost two times increase in hydrolysis amount is observed. The activating ability of dialyzed albumin solution disappears after it has attained the equilibrium for dialysis against FeSO4 solution.
This work was carried out in part by a Grant for Development of Scientific Researches given from the Ministry of Education. M. Hayakawa
