Abstract
Digestion in 1% U.S.P. malt diastase or in 1% ptyalin at 37 [degree]C for 1 hr. is an effective substitute for the salivary digestion test used by Bauer, by Bensley and others" for the identification of glycogen. Actually the test is not specific for glycogen, since diastase, ptyalin and amylopsin digest other polysaccharides than glycogen, notably starch. The enzymes should be dissolved in a buffered neutral saline soln. consisting of 8 g. NaCl, 1.3 g. Na2HPO4 and 0.8 g. NaH2PO4-H2O in 1 1. of water. Enzyme tests should be done on uncollodionized sections.

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