Differential androgen uptake by the lobes of the rhesus monkey prostate

The prostate of the rhesus monkey (Mucacca mulatta) consists of a cranial and a caudal lobe. The uptake of [3H] testosterone by these 2 lobes has been measured and compared with control tissues. A significantly higher uptake of radioactivity was found in the caudal lobe when compared to cranial as well as other control tissues. The uptake of radioactivity by the caudal and cranial lobes was suppressed when unlabelled testosterone was introduced into the incubation media. The relationship between these 2 lobes of the monkey prostate and the central and peripheral zones of the human prostate is described.