Citric Acid and Inositol 185 



Table 24. Distribution of citric acid in male reproductive organs 

 (Humphrey and Mann, 1949) 



side in the vesicular secretion, they may be secreted independently 

 by different cells. A study of the bull seminal vesicle (Mann, Davies 

 and Humphrey, 1949) has shown that the secretory epithelium is 

 composed of three distinct types of cells, designated A, B and C, 

 which appear to be concerned in the secretory processes, but react 

 in a different manner to several histological stains. Type B con- 

 sists of lipid-laden cells mentioned on a previous occasion (p. 133) 

 whereas A and C cells contain no lipid, but still differ materially 

 from each other, in so far as staining is concerned. It remains for 

 future histochemical studies to establish their specific secretory 

 function. 



