title: Ultrastructural changes during cardiogenesis in lead poisoning. I. Endocardial cushion tissue.
mesh_terms: D000818:Animals; D002467:Cell Nucleus; D002642:Chick Embryo; D004699:Endocardium / Q000473:pathology*; D006321:Heart / Q000196:embryology*; D007855:Lead Poisoning / Q000473:pathology*; D008854:Microscopy, Electron; D008928:Mitochondria; D008933:Mitochondrial Swelling