Matthew B. Hancock

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The distribution in the spinal cord of the rat of preganglionic neurons sending fibers into the hypogastric nerve was determined with the retrograde transport of horseradish peroxidase (HRP). Labeled cells were present in the intermediate gray matter of spinal segments L1-L2. The majority (81%) of HRP-filled cells formed a continuous column along the(More)
The sequential application of the peroxidase-antiperoxidase (PAP) technique with nickel-intensified DAB and with DAB alone was used to visualize black peptide-immunoreactive endings on amber serotonin-immunoreactive cells in 1-2-micron paraffin sections of the hamster medulla. Met-enkephalin- and substance P-positive terminals were present on serotonin(More)
The retrograde transport of horseradish peroxidase (HRP) was used to determine the distribution of hypothalamic neurons which send axonal projections to the spinal cord. Labeled cells were observed in the paraventricular nucleus (PV) and in the lateral hypothalamic area following HRP injections into the lower thoracic and upper lumbar spinal cords of rats.(More)
The anatomic relationships between projections from the intermediate portion of the nucleus of the solitary tract (NTS) and phenylethanolamine N-methyl transferaselike-immunoreactive (PNMT-LI) cells in the medulla oblongata were analyzed in Sprague-Dawley rats by using two-color immunoperoxidase staining combined with the anterograde transport of Phaseolus(More)
Somatovisceral convergence was demonstrated in recordings from 15 of 16 spinothalamic tract cells in the lower thoracic spinal cords of anesthetized monkeys. Inputs were produced by mechanical (or sometimes electrical) stimulation of the skin over the lower trunk and by electrical stimulation of the greater splanchnic nerve through a buried electrode. The(More)
Using the retrograde transport of horseradish peroxidase (HRP) in combination with two-color immunoperoxidase staining, boutons stained with antisera to substance P (SP), serotonin (5HT) and oxytocin (OX) have been observed in contiguity with neurons in the rostral and caudal medulla that showed immunoreactivity for phenylethanolamine N-methyl transferase(More)
Following the iontophoretic deposition of Phaseolus vulgaris leucoagglutinin (PHA-L) into the rostral medullary raphe, which included portions of the caudal nucleus raphe magnus, rostral nucleus raphe pallidus, rostral nucleus raphe obscurus and rostral nucleus reticularis paragigantocellularis, two-color immunoperoxidase staining was employed to(More)
Serotonin-immunoreactive fibers have been observed in the dorsal columns of the golden hamster spinal cord. The fibers were visualized using the PAP method which was intensified with a DAB-nickel substrate. The fibers were arranged preferentially in the mid-sagittal plane, and many were observed coursing from the dorsal columns into the dorsal gray matter.(More)