Fig. 4.
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FIG. 4. a) Section of an ovary from a rat injected with 4 mg EV in 0.2 ml oil and sacrificed on Day 30. In total, seven corpora lutea marked with CL, three cystic follicles (CF) marked with CF, and two atretic secondary follicles marked with ASF are seen. One cystic follicle (b) and one atretic secondary follicle are framed (c). Magnification x2.5: Section stained with hematoxylin-eosin. b) Cystic degenerating follicle showing a thin granulosa layer and debris in follicular fluid. Magnification x20. c) An atretic secondary follicle with detachment of the oocyte from the cumulus mass of pyknotic granulosa cells. Magnification x20