title: The Ying-Yang hypothesis of opioid peptide immunomodulation.
authors.forename: N P
authors.initials: NP
authors.lastname: Plotnikoff
mesh_terms: D004723:Endorphins / Q000502:physiology*; D006801:Humans; D008213:Lymphocyte Activation; D011957:Receptors, Opioid / Q000502:physiology; D013601:T-Lymphocytes / Q000276:immunology*
chemical_list: D004723:Endorphins; D011957:Receptors, Opioid