The phosphatase activity of spleen extracts

THERE have been many references in the literature to the presence of enzymes, capable of synthesising and hydrolysing phosphoric esters, in mammalian tissues. Grosser and Husler [1912] and Forrai [1923] described such an enzyme in the intestine. Robison [1923] described similar enzymes in the bone, kidney, liver, spleen and pancreas and in this and a subsequent communication [Robison and This suggestion has received support, and much evidence, which has been clearly summarised by Kay [1928, 1; 1931] has concluded that the phosphatases of the bone, kidney, intestinal mucosa and blood-plasma are identical, basing his claims upon the following evidence.