Dams were anesthetized with one of the following drugs or drug combinations: (1) sodium pentobarbital; (2) ketamine hydrochloride and xylazine; or (3) sodium pentobarbital and ketamine hydrochloride.

• 通过下列一种或多种药物对孕鼠进行麻醉：（1）戊巴比妥钠；（2）盐酸氯胺酮和甲苯噻嗪；（3）戊巴比妥钠和盐酸氯胺酮。