Figure 1. Decreased survival of CSA-13-treated B. subtilis spores.
Decline in the survival of B. subtilis culture after incubation with various concentrations of CSA-13 (panels A–C) evaluated using a killing assay method. Level of metabolic activity observed in ceragenin-treated spore samples exposed to appropriate environmental conditions when compared to untreated control (panels D–F) assessed using the MTT assay. Samples were incubated at RT (panels A, D for vegetative form and panels B, E for spore form, respectively) and at 70 °C (panels C, F) for 15 (white squares), 30 (grey circles), 60 (black circles), 120 (white triangles) and 240 (grey diamonds) minutes. Data from experiments performed in triplicate are shown.