Erwin E. Nelson

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Capillaries in the cat hypothalamus receive axon terminals which are comparable to neurovascular junctions in cerebral and systemic arteries and arterioles. The innervation of capillaries in the central nervous system may be derived from central neurons, in contrast to cerebral arterial vessels, which are supplied by the peripheral autonomic nervous system.
The subcutaneous injection of epinephrine in doses of 1 mg. per kilo brings about a polycythemia, an increase in reticulocytes, and an increase in young forms of polymorphonuclear leucocytes. The polycythemia is no doubt in part a concentration phenomenon, but the presence of these young cells in increasing numbers is believed to be evidence that there is(More)
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