SPERMATOGENE.SLS IN THE ALBINO RAT 



EZRA ALLEX 



PLATE 5 







f ^ 



50 jpp 





\/« 



53 



i 



t^'' 



5! 



A 



54 



r^? 





/» 



/u** 



.56£)>;.j£L 



57 



58 



185 



