n.形象化；客观化
=externalization(美).
Keywords Rat embryo culture;Inseminatio externalis quality control; 关键词鼠胚培养;体外授精;质量控制;
lobus externalis 外叶
skeleton externalis 外骨骼
annulus inguinalis externalis 腹股沟外环(鼠蹊外环)
