PLATE 3 



EXPLANATION OF FIGURES 



5 Portion of sixth from last discharged follicle, showing large number of 

 lutear cells (Z) in the theca interna (X 40). 



6 Part of figure 5 enlarged (X 176). 



7 Small discharged follicle with cavity nearly obliterated. Small plug of 

 cells (p), filling in the cavity. Theca interna filled with masses of lutear cells 

 H). (X 40.) 



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