1. In corpora lutea of pregnancy, either extrauterine or intrauterine, they were most abundant. In corpora lutea of menstruation they were sparse.

2. Ovarian Atrophy is defined as decreased ovarian size and weight and decreased numbers of oocytes, developing follicles, and corpora lutea ( Figure 1, Figure 2 and Figure 3).

3. Atrophic ovaries are small, with a conspicuous absence of follicles and corpora lutea and the presence of increased stroma, with frequent prominent pigment in the interstitium ( Figure 4, Figure 5 and Figure 6)