[Ultrastructural study of normal embryos and of lethal hybrids in echinoderms].
D000818:Animals; D003593:Cytoplasm; D004247:DNA / Q000378:metabolism; D004447:Echinodermata / Q000196:embryology*; D004721:Endoplasmic Reticulum; D005260:Female; D006824:Hybridization, Genetic; D008297:Male; D008854:Microscopy, Electron; D012313:RNA / Q000378:metabolism
D012313:RNA; D004247:DNA
Etude ultrastructurale des embryons normaux et des hybrides létaux entre echinodermes.