Summary
In the hypothalamus of the adult domestic mallard, small to medium-sized perikarya are stained specifically with rabbit antiserum against cyclic somatostatin (PAP technique of Sternberger). The somatostatin-immunoreactive material is located in neurons different from those containing immunoreactive LHRH, vasotocin or mesotocin. Somatostatin-containing perikarya are observed 1) in a chain-like arrangement extending from the area of the median division of the supraoptic nucleus to the caudal end of the paraventricular nucleus; 2) as single cells in the preoptic region; and 3) as a conspicuous formation in the optic tract division of the supraoptic nucleus. In the rostral portion of the median eminence, somatostatin-immunoreactive axons penetrate into the external zone. Fine accessory fiber bundles project to the neural lobe.
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Blähser, S., Fellmann, D. & Bugnon, C. Immunocytochemical demonstration of somatostatin-containing neurons in the hypothalamus of the domestic mallard. Cell Tissue Res. 195, 183–187 (1978). https://doi.org/10.1007/BF00233685
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DOI: https://doi.org/10.1007/BF00233685