Flow cytometric analysis of induced human graafian follicles. I. Demonstration and sorting of two luteinized cell populations**Funded by Biomedical Research Support grant no. 5-07-RR05635-27, Department of Health and Human Services, Washington, D.C.††Presented in part at the 37th Annual Meeting of the Society for Gynecologic Investigation, St. Louis, Missouri, March 21 to 24, 1990.