title: In vitro adsorption of theophylline onto amberlite XAD4 in human plasma.
mesh_terms: D000327:Adsorption; D006801:Humans; D011137:Polystyrenes; D011145:Polyvinyls; D013806:Theophylline / Q000097:blood*
chemical_list: D011137:Polystyrenes; D011145:Polyvinyls; C012101:XAD-4 resin; D013806:Theophylline