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Tuberculosis progression in the lungs of the sst1-susceptible mice of the genetically resistant (B6) and susceptible (C3H) genetic backgrounds. Histopathology of tuberculosis lesions in the lungs of C3HeB/FeJ (A) and B6.C3H-sst1 (B) mice 6 (left) and 12 (right) weeks after aerosol infection with M. tuberculosis. H&E staining; acid-fast fluorescent staining for mycobacteria. Original magnifications: ×40 (H&E); ×100 (AFF).
