Fig. 3

Lack of activated proinflammatory Iba1⁺ MHCII⁺ microglia in the hippocampus of blast-exposed animals (6 weeks post-blast exposure). Iba1, green; MHCII, red; DAPI, blue. Similar negligible presence of MHCII⁺ microglia (<1% of Iba1⁺ cells) was observed in the hippocampus of blast exposed (a-c) and control animals (d-f). Merged images correspond to Panels c and f, respectively. Scale bar, 100 μm. Panels g-i show MHCII⁺ cells residing in the meninges surrounding the motor cortex of a blast-exposed animal (positive control). Merged image is shown in Panel i. Scale bar, 20 μm