title: Effect of levels of nitrogen intake on tryptophan metabolism and requirement for pregnancy of the rat.
mesh_terms: D000818:Animals; D005260:Female; D005971:Glutamates / Q000378:metabolism; D005998:Glycine / Q000378:metabolism; D008297:Male; D009536:Niacinamide / Q000378:metabolism; D009584:Nitrogen / Q000494:pharmacology*; D009711:Nucleotides / Q000378:metabolism; D011247:Pregnancy; D011270:Pregnancy, Animal; D051381:Rats; D014364:Tryptophan / Q000378:metabolism*
chemical_list: D005971:Glutamates; D009711:Nucleotides; D009536:Niacinamide; D014364:Tryptophan; D009584:Nitrogen; D005998:Glycine