title: Regional variation in extracellular purine levels in vivo.
mesh_terms: D001853:Bone Marrow / Q000378:metabolism; D006801:Humans; D008102:Liver Circulation; D011687:Purines / Q000097:blood / Q000134:cerebrospinal fluid / Q000378:metabolism*; D012016:Reference Values
chemical_list: D011687:Purines