on days 12 , 19 , 40 , and 61 of lactation , litters were removed for 5 h and after 1 h of resuckling the synthesis of dna and rna in the mammary gland was estimated by the incorporation of ( 3h ) thymidine and ( 14c ) uridine into mammary dna and rna in vitro respectively .
C0929301
mammary gland
C0006141
mammary