Theophylline actions on adenosine receptors.
D000241:Adenosine / Q000378:metabolism; D006801:Humans; D008168:Lung / Q000187:drug effects; D008214:Lymphocytes / Q000187:drug effects; D008407:Mast Cells / Q000187:drug effects; D011956:Receptors, Cell Surface / Q000187:drug effects* / Q000502:physiology; D011983:Receptors, Purinergic; D013806:Theophylline / Q000494:pharmacology*
D011956:Receptors, Cell Surface; D011983:Receptors, Purinergic; D013806:Theophylline; D000241:Adenosine