title: Presence of urea in rat brain.
abstract: This paper reports the presence of urea in rat brain and the evidence that it does not come from blood contamination. The amount of urea is higher during the first 4 days after birth, and it decreases thereon as the brain develops. Urea concentration in brain remains constant from the age of 9 days to 1 year. A possible mechanism of brain urea formation is discussed.
mesh_terms: D000367:Age Factors; D000818:Animals; D000831:Animals, Newborn; D001921:Brain / Q000378:metabolism; D001923:Brain Chemistry; D009929:Organ Size; D051381:Rats; D014508:Urea / Q000032:analysis* / Q000378:metabolism
chemical_list: D014508:Urea