Correlative fluorescence‐immunocytochemical technique for the localization of monoamines and neurophysin (NP)

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Abstract
A correlative fluorescence‐immnucytochemical technique for the localization of monoamines and neurophysin on sections of freezedried tissues is described. An extensive network of monoamine‐containing perikarya and terminals was found throughout the hypothalamus and median eminence. Immunocytochemical localization of antisera for neurophysin was found in the supraoptic and paraventricular nuclei of the hypothalamus and in both the zona interna and zona externa of the median eminence. This correlative demonstration of both catecholamines and neuropeptides within the same tissue provides a new approach to the study of neurotransmitters and neurohormones and their role in the regulation of the peripheral endocrine system.