. Endocrinology. ^m Fig. 3. Section tlirougb testicle of a rabbit 8 Vi months old; horizontal in-cisions on the testis made at the age of 2 months. Normal penis. Interstitialcells well developed. Seminal tubules in a state of degeneration ; desquamationof cells which seem more to bi cells of Sertoli, b^ixation. Bouin : ^yf] Fig. 4. Section througli testicle of a rabbit SVi months old. horizontal in-cisions through the testicle and ductus epididymus at the age of 2 months. Theanimal had the penis of a castrate. Interstitial cells of extraordinary dimensionspacked full e


. Endocrinology. ^m Fig. 3. Section tlirougb testicle of a rabbit 8 Vi months old; horizontal in-cisions on the testis made at the age of 2 months. Normal penis. Interstitialcells well developed. Seminal tubules in a state of degeneration ; desquamationof cells which seem more to bi cells of Sertoli, b^ixation. Bouin : ^yf] Fig. 4. Section througli testicle of a rabbit SVi months old. horizontal in-cisions through the testicle and ductus epididymus at the age of 2 months. Theanimal had the penis of a castrate. Interstitial cells of extraordinary dimensionspacked full evidently with fat. Seminal tubules in a state of degeneration : theyseem to be less developed than in Fig. 3. Fixation and stain, as Fig. 3. 8 SEAT OF EXDOCKIXE FrXCTlOX OF TESTICLE not i)nssible to make jiiiy precise statement as to the character ofthe (lesiiuamated cells. B. Now I will give an example which shows that full hor-monic activity of the testis is possible even in the absence of allstages of spermatogenesis (10). On a guinea pig (Prot. No. 30)about ten days old. partial castration was performed; the lefttestis was wholly removed aiid from the right testis only a smallfragment from the ui)per pole was left in the body. When theanimal was seen four months after the operation the penis witiithe intromittent sack and the horny


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Keywords: ., bookcentury1900, bookdecade1910, booksubjectendocrinology, bookye