the laminar distribution of muscarinic acetylcholine receptors , including the m1-receptor subtype , of beta-adrenergic receptors , and noradrenaline uptake sites , was studied in the adult rat visual , frontal , somatosensory and motor cortex , using quantitative receptor autoradiography .
C0034826
muscarinic acetylcholine receptors
C0531859
m1-receptor