Fig. 11.1 Two astrocytes in the primary visual cortex of a 5 year old monkey. Astrocytes have pale nuclei, usually with a thin rim of heterochromatin beneath the nuclear envelope. The cytoplasm is also pale and astrocytes have very irregular shapes so that their contours fit the elements in the surrounding neuropil. Even in young monkeys it is common to encounter dark, heterogeneous inclusions in the cytoplasm.
