gestational sac

短语

孕囊

词形变化

gestational sacs 复数 gestational sacs

别名

gestation sac

释义与例句

n.
  1. 1.

    The intrauterine structure around an embryo in the very early stage of a fetus that can be used to determine if an intrauterine pregnancy exists until the embryo is identified.

    孕囊

    医学