Detailed histological images of each follicle stage (primordial, primary, secondary, and tertiary) and whole ovarian sections for Ames dwarf and Normal mice. The diameter of oocytes enclosed in primordial follicles was smaller in Ames dwarf than Normal mice. No further histological differences were observed between genotypes. O – oocyte, ON – oocyte nuclei, GC – granulosa cells, TC - theca cells, A – antrum, CL – corpus luteum, TF – tertiary follicle.