BRD2 and Immunodeficiency: In vivo, fragmented ovaries from the above activated and control groups were then transplanted under the bilateral kidney capsule in the same ovariectomized adult (6–8-week-old) severe combined immune-deficiency (SCID) mice, which received daily intraperitoneal (i.p.)injections of follicle stimulating hormone (FSH) (1 IU/day) to promote follicle development.