Abstract

The distribution of dopamine D 2 receptors was studied using the autoradiographic technique on rabbit pituitary gland sections incubated in the presence of [ 3H]spiroperidol. D 2 receptors were absent from the intermediate lobe as already reported. In the anterior lobe, the location of D 2 receptors exactly overlapped that of the prolactin-producing cells revealed by immunocytochemistry on the sections used for autoradiography. No topographical relationships could be found between the D 2 receptors and the TSH-producing cells which are known to be inhibited by dopamine in the rat.

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