Figure 6

Structure (6.1, 6.2) and ultrastructure (6.3) of the cellular mechanism of adherence of the oil covering layer (OCL) to the oil drop (OD) during stage F (54 hpf). In (6.1) (photographed 1200×) and (6.2) (5 µm-section of the structure shown in (6.1)) the OCL traps half the OD to form the complex (OCL + OD). Endoplasmic reticulum (ER) and mitochondria (Mt) are visible organelles embedded in the OCL (6.3). E embryo, T embryo tail, PS perivitelline space, YSL yolk syncytial layer, EVL enveloping layer, Ch chorion, Y yolk, VE vesicles of exocytosis and (I), anchorage grove between OCL and YSL.