Fig. 2.
FER kinase localizes to the nucleus of growing oocytes. FER kinase was present in the nucleus and cytoplasm of oocytes and granulosa cells from primordial and small primary follicles (A & B). However, as oocytes grow, FER becomes localized specifically within the GV (C & D). The location of the GV in each oocyte is marked with an * (Green = FER; red = DNA. Bar = 20 μm.)