title: Methylxanthines as adenosine receptor antagonists.
mesh_terms: D006801:Humans; D011943:Receptors, Adrenergic, beta / Q000187:drug effects; D011956:Receptors, Cell Surface / Q000187:drug effects*; D011983:Receptors, Purinergic; D014970:Xanthines / Q000494:pharmacology*
chemical_list: D011943:Receptors, Adrenergic, beta; D011956:Receptors, Cell Surface; D011983:Receptors, Purinergic; D014970:Xanthines