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Gluc bioluminescence is not affected by heat shock. Solid symbols, luminescence from M. smegmatis expressing Gluc; open symbols, luminescence from M. smegmatis expressing luxAB. M. smegmatis cultures were subjected to 30 min of heat shock at 45°C (triangles) and 48°C (squares). Control samples were incubated at 37°C (circles). The standard deviations are smaller than the symbols.
