Bacteria grew in LB medium at 37C and growth was detected as turbidity (560 nm) using a microtitre plate reader (Power Wave XS2, Biotek, VT, USA). The maximum level of DMSO to which the cells were exposed was 2.5%.
Bacteria grew in LB medium at 37C and growth was detected as turbidity (560 nm) using amicrotitre plate reader (Power Wave XS2, Biotek, VT, USA). Themaximum level of DMSO to which the cells were exposed was2.5%.