略語大辞典 [Med] 26 AC amniotic cavity 羊膜腔. 羊膜内の体腔.amniotic cavity; a space surrounded by coelomic fluid for the first 12 weeks of gestation; ref. AC(amniocentesis); ref. ECC(extra-embryonic coelomic cavity); [Med]. 丸善「略語大辞典」JLogosID : 11864410