Fig. 3

Adhesive chorion surface. A Treated with EtOH, the chorion with sticky coating is peeled off. B Partially peeled off chorion on the egg shows that microspheres are attached only above the surface. C Old chorion has reduced adhesiveness and lost some microspheres. All arrows indicate internal surfaces of the egg chorion and arrowhead indicates external surface of the egg chorion. Each scale bar indicates 50 µm (A) and 20 µm (B) and 10 µm (C), respectively