Embryonic use of egg shell calcium in a gastropod.
D000818:Animals; D002113:Calcification, Physiologic; D002118:Calcium / Q000032:analysis / Q000378:metabolism*; D002132:Calcium Radioisotopes; D004528:Egg Shell / Q000032:analysis*; D004625:Embryo, Nonmammalian / Q000032:analysis / Q000378:metabolism*; D008974:Mollusca / Q000196:embryology*
D002132:Calcium Radioisotopes; D002118:Calcium