title: Sex chromosome expression in embryonic development.
mesh_terms: D000818:Animals; D004622:Embryo, Mammalian / Q000502:physiology; D047108:Embryonic Development / Q000235:genetics; D005314:Embryonic and Fetal Development / Q000235:genetics*; D005260:Female; D005786:Gene Expression Regulation / Q000502:physiology; D006801:Humans; D011247:Pregnancy; D012730:Sex Chromosomes / Q000502:physiology*