title: Scanning electron microscope studies of the surface of the sea urchin egg.
mesh_terms: D000818:Animals; D005260:Female; D008855:Microscopy, Electron, Scanning; D010063:Ovum / Q000648:ultrastructure*; D012617:Sea Urchins; D013045:Species Specificity; D015053:Zygote / Q000648:ultrastructure*