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  Indian J Med Microbiol
 

Figure 3: Photomicrographs of (silver ×1000) silver-stained sections of the hippocampus: (a) An adult rat aged 8 months showing normal appearance of the pyramidal cells, which were triangular in shape with large vesicular nuclei (blue arrows) and normal dendrites. (b) A rat aged 22 months showing neurofibrillary tangles (blue arrows), senile neuritic plaques (red arrows), and vacuolated neuropilic areas (yellow arrows). (c) A rat aged 26 months showing scattered silver-positive neuritic plaques within the polymorphic layer (red arrows), more neurofibrillary tangles (blue arrow), and vacuolated neuropilic areas (arrows heads).

Figure 3: Photomicrographs of (silver ×1000) silver-stained sections of the hippocampus: (a) An adult rat aged 8 months showing normal appearance of the pyramidal cells, which were triangular in shape with large vesicular nuclei (blue arrows) and normal dendrites. (b) A rat aged 22 months showing neurofibrillary tangles (blue arrows), senile neuritic plaques (red arrows), and vacuolated neuropilic areas (yellow arrows). (c) A rat aged 26 months showing scattered silver-positive neuritic plaques within the polymorphic layer (red arrows), more neurofibrillary tangles (blue arrow), and vacuolated neuropilic areas (arrows heads).