title: Endogenous druglike substances: implications and approaches to their study.
mesh_terms: D000663:Amphibians / Q000502:physiology; D000818:Animals; D000937:Antigen-Antibody Reactions; D001569:Benzodiazepines / Q000276:immunology; D001798:Blood Proteins / Q000502:physiology; D002298:Cardenolides; D004077:Digoxin; D004723:Endorphins / Q000502:physiology*; D005665:Furosemide; D006801:Humans; D008024:Ligands; D008322:Mammals / Q000502:physiology; D008968:Molecular Conformation; D009294:Narcotics / Q000276:immunology; D011687:Purines / Q000502:physiology*; D011956:Receptors, Cell Surface / Q000502:physiology*; D011963:Receptors, GABA-A; D012503:Saponins; D000254:Sodium-Potassium-Exchanging ATPase / Q000037:antagonists & inhibitors; D012995:Solubility; D013329:Structure-Activity Relationship
chemical_list: D001798:Blood Proteins; D002298:Cardenolides; D004723:Endorphins; D008024:Ligands; D009294:Narcotics; D011687:Purines; D011956:Receptors, Cell Surface; D011963:Receptors, GABA-A; D012503:Saponins; C034504:digoxin-like factors; D001569:Benzodiazepines; D004077:Digoxin; D005665:Furosemide; D000254:Sodium-Potassium-Exchanging ATPase