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1. The wall of a recently ruptured Graafian follicle, showing the granulosa intact. Hematoxylin and eosin. X "• '00. 



(6) Granulosa, (c) Theca interna. 



2. Additional cells of corpus luteum, type I. Mallory*s stain. X 400. 



(a) Lutein cells. (A) Additional cells, type I. 



3. Additional cells of corpus luteum. type 2. Mallory's stain. X 650. 



(a) Lutein cell. (A) Additional cells, type 2. 



4. Corpus luteum, first period. Mallory's stain. X 650. 



5. Corpus luteum. second period, Mallory's stain. X 650. 



6. Corpus luteum, second period, osmic acid stain. X 650. 



(a) Droplet of fat inside one of the peripheral vacuoles. 



7. Corpus luteum. third period. Mallory's stain. X 650. 



(a) Lutein cell containing ring-form of canaliculi. (A) Lutein cell containing cleft-like canalicular apparatus, 

 (c) Chromatic granules. 



8. Corpus luteum. fourth period. Mallory's stain. X 650. 



9. Corpus luteum, fourth period, osmic acid stain. X 650. 



(a) Fat-globules in a lutein cell. (A) Fat-globules in a connective tissue cell, (c) Chromatic granules. 



