Electron microscope investigations of the modes of yolk and pigment formation in sea urchin oocytes.
D004447:Echinodermata; D004530:Egg Yolk; D005260:Female; D008854:Microscopy, Electron; D010063:Ovum / Q000166:cytology*; D010860:Pigments, Biological / Q000096:biosynthesis*
D010860:Pigments, Biological