Figure 3

Late oogenesis in Bicellariella ciliata (TEM). A, B, detail of follicle epithelium adjacent to vitellogenic oocyte; B, part of the vitellogenic oocyte with microvilli surrounded by follicle cells; C, late nurse cell (with few yolk granules in cytoplasm) adjoined to its oocyte-sibling and surrounded by follicle cells (cytoplasmic bridge between siblings arrowed); D, detail of late oocyte and nurse cell (to the right) with numerous microvilli. Abbreviations: co, zooidal coelom; ev, ergastoplasmic vesicles; fo, follicle cells; ga, Golgi apparatus; ld, lipid droplet; mv, microvilli; mvb, multivesicular body; mi, mitochondria; n, nucleus; nc, nurse cell; ns, nucleolus; nu, nucleus; o, oocyte; p, polypide; pp, protein platelet; y, yolk-like inclusion in the cytoplasm of follicle cell. Scale bars: A, C, 2.0 μm, B, D, 1.0 μm.