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THE HYDROLYSIS OF ADENOSINE TRIPHOSPHATE BY HUMAN SPERMATOZOA

Summary.: Human spermatozoa contain an ATPase which is stimulated by sodium and potassium ions in the presence of magnesium ions. The hydrolysis of ATP is inhibited by ouabain, sodium fluoride and Triton. The presence of an active 5'-nucleotidase in human spermatozoa is indicated by the accumulation of adenosine as the ultimate product of ATP hydrolysis.