to evaluate the role of the quantitative adaptation in dietary protein at weaning in the growth and maturation of the rat gastrointestinal tract , we studied parameters of tissue mass , dna synthesis , and enzyme activities in suckling pups weaned by day 17 to a semipurified synthetic , isocaloric diet that contained either 8 or 27 % casein ( controls ) .
C0012177
dietary protein
C0007332
casein