ORGANIC PHOSPHORUS COMPOUNDS IN THE TESTIS OF THE RAT AT VARIOUS AGES12

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Abstract
NUMEROUS investigations have been made of the pentose nucleic acid (PNA) and desoxypentose nucleic acid (DNA) concentrations of various tissues and organs in different experimental animals. These have been summarized in tabular form by Davidson (1947, 1950), Schneider (1946) and Schneider and Klug (1946). Cytochemical studies covering the content and distribution of nucleic acids in many tissues and organs have been reviewed by Davidson (1950), Brachet (1950) and Caspersson (1950). Examination of the literature has shown that little attention has been given to the concentration and distribution of these important substances in the testis. McCarter and Stelges (1948) in an examination of methods for the determination of phosphorus-containing constituents in rat tissues have included a limited survey of organic phosphorus compounds in the testis. Using cytochemical techniques Brachet (1933, 1940, 1941) has studied insect and amphibian testes and Caspersson (1933, 1936) grasshopper testes. The paucity of information concerning the nucleic acids of the testis, particularly the mammalian testis,