Identification of cytoplasmic laminar bodies in neurons of the cat lateral geniculate nucleus by phase contrast microscopy.

It is demonstrated that cytoplasmic laminar bodies (CLBs) can be identified in Nissl stained celloidin sections by means of phase contrast microscopy. Provided that the refractive index of the mounting medium is in the range of 1.56 to 1.65, CLBs appear as bright holes in the cytoplasm.