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Scanning electron micrographs of M. tuberculosis H37Rv (WT), the mutant H37RvΔRv3779, and the complemented mutant H37RvΔRv3779/pVV16-Rv3779 cultured in 7H9-oleic acid-albumin-dextrose-catalase-Tween 80 broth at 37°C. The length of the H37RvΔRv3779 mutant cells was on average 1.2 ± 0.1 μm, compared to 2.3 ± 0.1 μm for the WT strain and 2.1 ± 0.3 μm for the complemented mutant.
