16 



The Biochemistry of Semen 



have been discovered and identified in the accessory secretions, such 

 as citric acid by Schersten in 1929, prostatic phosphatase by Kutcher 

 and Wolbergs in 1935, fructose by Mann in 1945, phosphoryl- 

 choline by Lundquist in 1946, ergothioneine by Leone and Mann, 

 and inositol by Mann in 1951, and glycerylphosphorylcholine by 



Rabbit Rat 



Fig. 4. Diagrammatic outline of male accessory organs to illustrate the 

 localization of fructose {shaded areas). 



Am, ampullae. SV, seminal vesicle. Pr, prostate. VP, ventral prostate. 



DLP, dorsolateral prostate. Pp, glandulae paraprostaticae. GV, glandula 



vesicularis. CG, coagulating gland. 



Diament, Kahane and Levy in 1952 (for details concerning the 

 secretory function of male accessory organs see: Mann and Lutwak- 

 Mann, 1951ft; Lutwak-Mann, 1951). 



Owing to the complex nature of the seminal plasma the physio- 

 logist or biochemist is forced to adopt a distinct approach when 

 investigating any one of the accessory gland secretions. There are 

 several instances where male accessory organs which, though pre- 

 viously believed on the basis of similar embryonic origin or related 



