Abstract
Cytoplasmic structures in electron micrographs of normal ganglia taken from 3-48 day old rats are correlated with routine histologic preparations. Mitochondria, Nissl bodies, the Golgi apparatus and neurofilaments are described. Dark and pale nerve cells are seen in electron micrographs and the possible correlation between the two cell types and the myelinated and unmyelinated nerve fibers in the ganglion is discussed.