title: [Simple and rapid estimation of serum theophylline concentrations using the apoenzyme reactivation immunoassay system].
mesh_terms: D001051:Apoenzymes; D001249:Asthma / Q000097:blood; D006801:Humans; D007118:Immunoassay / Q000379:methods*; D013806:Theophylline / Q000097:blood*
chemical_list: D001051:Apoenzymes; D013806:Theophylline