THE precipitin reaction is also known as the “biological reaction” for proteins; it enables us to distinguish between proteins by using the animal body as a test-tube, and to establish ...

The Journal of Infectious Diseases, Vol. 40, No. 6 (Jun., 1927), pp. 706-712 (7 pages) The fibrinogens of beef, dog, horse, human, sheep, and swine blood are precipitinogenic. These fibrinogens, to ...

According to the method described, specific precipitins may be prepared as dry powders. The powder so prepared is a protein-acid salt, soluble in water forming a ...