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Applied Microscopy
Fig. 9 | Applied Microscopy

Fig. 9

From: Fine structural characteristics of the chorionic microspheres on the egg surface of the orb web spider Trichonephila clavata

Fig. 9

Transmission electron micrograph of the oocyte in T. clavata. A Each oocyte consists of proteid yolk (Py) and lipid yolk (Ly) including aggregates of fine electron dense granules. The vitelline membranes (Vm) of the oocyte face each other. B On the surface or empty space between the vitelline membranes, microspheres or its precursors are not observed. C Vitelline membrane is composed of an inner homogeneous electron lucent component and an outer layer of more or less electron dense component. No secretion is observed on the vitelline membrane adjacent to the lumen. Mv: Microvilli. Each scale bar indicates 5 µm (A) and 500 nm B, C

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