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A tumor model involving stereotactically implanted culture-reared tumor cells is presented. Stainless steel cannulas were stereotactically and permanently implanted into the caudate nucleus of 30 rats. The animals were separated into two groups. In Group I, 15 animals received a 10-microliters injection containing 10(6) C6 glioblastoma cells (five rats),(More)
Distribution of dynorphin A (DyA) immunoreactivity in the nucleus of the solitary tract (NTS) was examined in rats after various surgical transections by light and electron microscopic immunohistochemistry. In colchicine-treated animals DyA immunostained perikarya were seen in each subdivision of the NTS. In intact rats, dense network of immunopositive(More)
A fairly high number of neuropeptide Y (NPY) and adrenocorticotropic hormone (ACTH) immunoreactive (ir) neuronal perikarya and dense networks of NPY-ir fibers are present in the hypothalamic arcuate nucleus of rats. Light and electron microscopic double immunolabeling techniques were used to demonstrate morphological connections between NPY-ir nerve fibers(More)
Fine, varicose oxytocin-containing nerve fibers have been demonstrated in the hypothalamic arcuate nucleus in rats. Using Phaseolus vulgaris leukoagglutinin as an anterograde tracer, fine neuronal fibers of paraventricular nucleus origin could be seen throughout the arcuate nucleus. Using double immunostaining, oxytocin-immunoreactive varicose fibers were(More)
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