Part 1

Abstract

LM: The voluminous cells are threaded in a monolayer between ML and GrL. Their arrangement is polar. A basal, eccentrically lying nucleus is surrounded by an intense basophilic cytoplasm. In the toluidine-pyronine blue stained section the nucleus appears pale. It shows an entirely cloudy granulation with some darker spherical to angular condensations (usually near the membrane). As a darkly stained body the nucleolus is always clearly visible. The nuclear membrane is smooth, except for the side of the dendrite, where the nucleus shows inconstant notches. A larger amount of cytoplasm is at the side of the dendrites (apical) than at the side of the neurit (basal). Lateral and basal, the nucleus is surrounded only by a small edge of cytoplasm. Immediately before the primary dendrites branch off, the cytoplasm turns slightly lighter.