Neonates that received Sac + LiCl injections in utero avoided saccharin-painted nipples while neonates that received control injections preferred saccharin-painted nipples.

• 那些接受Sac+LiCl宫内注射的新生大鼠不愿选择Sac涂抹的奶嘴，而接受对照注射的新生大鼠则更愿意选择Sac涂抹的奶嘴。