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Comparison of the structure of cellular aggregation about the recombinant M. smegmatis MS_Rv2650c and MS_Vec. (A) MS_Rv2650c and MS_Vec strains were inoculated on MB 7H9 plates with or without 0.05% (v/v) Tween 80 and cultured at 37°C for 5–6 days. (B) The diameter of a single colony was observed and counted. Significantly differences (P < 0.05) are represented by different letters.
