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BENJAMIN H. WILLIER 



region. In the other two cases of this group, the sex-cord region, 

 although well developed, does not lie between the rete and the 

 connective-tissue capsule. In other words, the rete still lies in 

 its primitive position at the hilus (fig. 10, r). 



As in the other free-martin gonads, the intertubular tissue is 

 composed of a stroma of connective-tissue fibers among which 



'•r-W 



Fig. 11 Portion of the sex-cord region of the free-martin gonad, H-37. hv, 

 blood vessel; ss, Sertoli-cell syncytium (no germ cells) of a seminiferous tubule; 

 i, interstitial cells; w, thickened wall of tubule. X 107. 



are interstitial cells. A noticeable difference, and one probably 

 of much significance, is the great abundance of these interstitial 

 cells. The interstitial cells are most abundant in the highest 

 transformed gonads. In case H-37 (fig. 11, t), which is the most 

 completely transformed gonad of all of the post-natal free-martin 

 gonads, these cells are exceedingly abundant and of large size. 



