Figure 1: A granulosa cell tumor found in the left ovary of a 3.5-year-old female cynomolgus monkey. The right ovary and uterus were normal on microscopic evaluation. We diagnosed the left ovarian ...

Forkhead box protein L2 (FOXL2) is a protein involved in ovary development and maintenance, among other functions. Mutations in its gene are involved in ovarian failure and granulosa cell tumors, ...