[When does heart action start in the human embryo?].
D000328:Adult; D004622:Embryo, Mammalian / Q000502:physiology*; D005260:Female; D006321:Heart / Q000196:embryology*; D006801:Humans; D011247:Pregnancy; D011274:Pregnancy, Tubal / Q000601:surgery
Wann beginnt die Herzaktion beim menschlichen Embryo?