\nɑːkˈɒtɪk ɹɪsˈɛptəz], \nɑːkˈɒtɪk ɹɪsˈɛptəz], \n_ɑː_k_ˈɒ_t_ɪ_k ɹ_ɪ_s_ˈɛ_p_t_ə_z]\
Definitions of NARCOTIC RECEPTORS
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Cell membrane proteins that bind opioids and trigger intracellular changes which influence the behavior of cells. The endogenous ligands for opioid receptors in mammals include three families of peptides, the enkephalins, endorphins, and dynorphins. The receptor classes include mu, delta, and kappa receptors. Sigma receptors bind several psychoactive substances, including certain opioids, but their endogenous ligands are not known.
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- a general name for beers made from wheat by top fermentation; usually very pale cloudy and effervescent