Content and Distribution of Glycogen in Schistosoma mansoni.

Summary From 13.6 to 29.0% of the dry matter of the males of S. mansoni consisted of glycogen. In females the amount varied between 2.7 and 5.0%. The glycogen in both male and female worms was deposited principally in the musculature and parenchyma. The relatively small amount in the female is explained by the less well-developed musculature and parenchyma and the more abundant sexual apparatus which is glycogen negative. Histological studies were in general accord with the quantitative observation that the amount of glycogen in the male tends to increase with age.