somatic development in the premature mice and newborn controls was estimated by changes in body weight and in the weight of several organs ( liver , kidney , adrenal glands ) after the newborns had been killed at five developmental stages : 30 min after reanimation or parturition , 6 h after birth and at 9 h on days 2 , 6 and 20 .
C0022646
kidney
C0001625
adrenal glands