title: Determination of theophylline and caffeine from biological materials.
mesh_terms: D000818:Animals; D001923:Brain Chemistry; D002110:Caffeine / Q000032:analysis*; D006207:Half-Life; D008297:Male; D009132:Muscles / Q000032:analysis; D011485:Protein Binding; D051381:Rats; D011919:Rats, Inbred Strains; D013806:Theophylline / Q000032:analysis*
chemical_list: D002110:Caffeine; D013806:Theophylline