Ri/f,., $i'<J. H(f. 



th.ext. 





*igs 



<ss 



A < V:.*' 



■■■ m& r 



iSix'' •' 





?/Mn&-i 









i ■■■■ 





• ••■' 



% ' 



•Sp c. 



' ~~~ (bran. 



K 



■■■it *? 





-V 



a* 



a 



Fig. 5 a, Portion of wall of unruptured Graafian follicle (sow in heat, ova 

 maturing). Osmium tetroxide fixation without further stain, showing distribu- 

 tion of i'ats. X 380. b, A few cells from theca interna of same specimen. X 800. 

 gran., membrana granulosa; th.int., theca interna: th.ext., theca externa; sp.c.s., 



spindle-cell zone. 



m 



