88 



BIOLOGIC BASIS OF SFA' 



Fig. 2.7. An extreme degree of inhibition and reduction in certain regions of an ovary 

 under the dominance of a well developed testis (Humphrey, 1942). A. Level showing sterile 

 medulla above, with degenerate cortical zone below. B. Medulla with rete cord and a single 

 germ cell above, small cortical remnant below. C. Region showing complete atrophy. (From 

 Biological Symposia, Vol. IX, Jacques Cattell Press, Lancaster, Pa.) 







*^-V: 





•4 



Fig. 2.8. Sections Uuoiifiii a tian.sforniing o\;ny in an older case. Tlir cortex is extremely 

 reduced and the medidlary area is well differentiated as a testis. In B, except for the cortical 

 renmant, the histologic picture is that of a normal testis of intermediate development, 

 with well defined lobules (Humphrey, 1942; cf. Fig. 2.7). 



sal begins it may be confined to local re- 

 gions of the ovary. Transformation may set 

 in independently at several sites, resulting 

 in localized masses of testicular tissue which 

 are, however, histologically normal (Fig. 



2.8). Ultimately all renmants of cortex dis- 

 ai)i)ear and transformation is complete. Such 

 individuals are capable of breeding as males 

 (this depends on the new testis establishing 

 proper connections with the duct system) 



