title: A theory on the nature of physiologic opiate dependence: a formal statement.
mesh_terms: D000818:Animals; D006168:Guinea Pigs; D006801:Humans; D007082:Ileum / Q000187:drug effects / Q000502:physiology; D066298:In Vitro Techniques; D009021:Morphine Dependence / Q000503:physiopathology; D009119:Muscle Contraction / Q000187:drug effects; D009294:Narcotics / Q000494:pharmacology; D011957:Receptors, Opioid / Q000502:physiology; D019966:Substance-Related Disorders / Q000503:physiopathology*
chemical_list: D009294:Narcotics; D011957:Receptors, Opioid