Figure 2. Neurofibrillary tangles stained by the Gallyas technique.

The histological fields are representative of the neurofibrillary tangle abundance shown in 40 µm coronal sections of the frontal lobe and hippocampus. The numbers on the top right corners correspond to the case identification numbers given in Table 1 and the letters F and H represent frontal cortex and hippocampus, respectively. Scale bars  = 100 µm.