Chromatin astrocytes

FIGURE 1-12 A protoplasmic astrocyte abuts a blood vessel (lumen at I) in rat cerebral cortex. The nucleus shows a rim of denser chromatin, and the cytoplasm contains many organelles, including Golgi and rough endoplasmic reticulum, x 10,000. Inset (top left) Detail of perinuclear cytoplasm showing filaments. X44,000. 

FIGURE 34-2 Typical pattern of Alzheimer type II astrocytosis in frontal cortex of a 51-year-old cirrhotic patient who died in hepatic coma. Note astrocytes with large pale nucleus and margination of chromatin (large arrow). Doublets of Alzheimer type II cells frequently appear (open arrowhead). 

FIGURE 20.17 Pleomorphic xanthoastrocytoma. Round lipid vacuoles are visible in pleomorphic astrocytes with H E in this particular specimen. Note that nuclear to cytoplasmic ratios are low, chromatin is finely granular, and nuclear membranes have gentle curves despite the large pleomorphic nuclei and nucleoli. 

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