2013e-675 acetylcholine analysis antibody bindingsites(biochemistry) biochemistry biological biologicaltransport cellmembrane cellreceptors cellsurface cellularcontrolmechanisms cellularrecognition chemistry congresses cyclic dna dna-bindingproteins dna-proteininteractions histocompatibilityantigensclassii hormonereceptors immuneresponse immunesystem immunity immunoglobulinidiotypes immunologic immunology immunospecificity insulin membranes(biology) metabolism molecularbiology molecularrecognition morphology neuroregulators neurotransmitter neurotransmitteragents neurotransmitterreceptors neurotransmitters nucleotides peptidehormones peptides pharmacokinetics physiology proteinbinding proteins qh601i13t1978 qu34b6141979 qu4a2851978m qu4a285m1978 radioligandassay receptor receptors sensoryreceptorcells synapticreceptors toxins transcriptionfactors viruses w3ah2856th1978m wk820c9761980