Electron microscopic autoradiography and its application in research of sympathetic nervous system

A literary survey is presented of the application of electron microscopic autoradiography in research of the sympathetic nervous system and the results are reported of experiments with the application of electron microscopy in the research of ganglion cervicale superioris in rats and of nerve endings in the muscle septa of the cat spleen. Two methods were also compared of applying nuclear emulsions, i.e. on the mesh with histological sections and on the sections placed on the supporting membrane and on the glass slide. The former was found to be less exacting as concerns time. (L.O.)