Lipopigment fine structure in human seminal vesicle and prostate gland epithelia

The fine structure of lipopigments normally found in prostatic and seminal vescile epithelial cells of elderly men is described and compared to findings in human fetal and hypophysectomized rat accesory sexglands. In the prostate gland lipopigments are supposed to be a sign of reduced metabolic activity, whereas in the seminal vesicle lipopigment formation seems to indicate not only high functional activity but also regressive changes.