?:definition
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The aggregation, arrangement and bonding together of two or more different receptor complexes that individually undergo combination with a hormone, neurotransmitter, drug or intracellular messenger to form a higher level receptor complex. The formation of the higher level complex initiates a change in cell function. [GOC:dox, GOC:pad, GOC:PARL, PMID:22035699, PMID:24157794]
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