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Cell to cell communication by many hormones and neurotransmitters involves three major entities: receptor (R), G-protein (G), and effector molecule (E). Plasticity in this system is conferred by the(More)
alpha 2-Adrenergic receptor (alpha 2-AR) subtypes couple to pertussis toxin (PT)-sensitive G-proteins to elicit both stimulatory and inhibitory cell responses. Signal specificity may be generated by(More)
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