Figure 2From: The expression of cyclin-dependent kinase inhibitors p15, p16, p21, and p27 during ovarian follicle growth initiation in the mousep16 expression in later stage follicles. Original magnification 200X. (A) multiple preantral follicles with diminished p16 staining; (B) an antral follicle with diminished p16 staining; (C) an atretic follicle with increased p16 staining in the oocyte. Bar = 100 μm.Back to article page