Fig. 7.

Shown are representative examples of dystrophic (a, b; case no. 9), resting (c, d; case no. 3), activated (e, f; case no. 6) microglial cells at high power. Each set of images shows the same microscopic field in two focal planes using differential interference optics. Dystrophic cells are readily distinguished from both resting and activated cells by their fragmented cytoplasmic processes. Activated cells are distinguished by their hypertrophy. Both resting and activated cells have continuous, non-fragmented processes. All images are from entorhinal cortex. Scale bar 20 μm