Ovaries on Day 17 of the Estrous Cycle.

Ovaries on Day 17 of the Estrous Cycle.
The left ovary show a CL and a 12 mm follicle; the right ovary a 17 mm dominant follicle. Legend: 1 = follicle, 2 = corpus luteum, 5 = stroma.

Pieterse MC (1999)