胚はい幹かん細さい胞ぼうはいかんさいぼうMeanings1nounembryonic stem cellBiological term for a pluripotent stem cell derived from the inner cell mass of a blastocyst.胚はい幹かん細さい胞ぼうは再さい生せい医い療りょうの研けん究きゅうに