the apparent absence of high affinity sites for these [ 3h ] -catecholamine ligands ( in the 1-10 nm region ) and the presence of the [ 3h ] spiperone binding site in the anterior pituitary is compatible with the view that the pituitary [ 3h ] neuroleptic receptor with its low affinity for dopamine , may be the physiological site of dopamine action in the pituitary .
C0007412
catecholamine
C0013030
dopamine