[Normal structure and ultrastructure of the superior cervical ganglion cells in the rat].

It is surprising to ascertain, as did DE LEMNOS and PICK, that the fine structure of rat ganglia has not raised up more interest, If one considers neurons only, S.I.F. and satellite cells are not generally described. Relatively little information is available on the nucleus organization, except nuclear mambran folds (FORSSMANN). Cajal's intranuclear rod shaped inclusions have been omitted or imperfectly studied except by SEITE. However, the presence of the structures testifies the biochemical activity in neurons. In the present ultrastructural investigation, perticular attention was given to the perikaryon fine structure in neurons. Changes in neuronal appearance were estimated in cultures and grafts with reference to morphological features of the perikaryon.