Figure 1From: Use of nfsB, encoding nitroreductase, as a reporter gene to determine the mutational spectrum of spontaneous mutations in Neisseria gonorrhoeaeSpontaneous mutation frequency of various lab strains of N. gonorrhoeae. Mutation frequencies were determined by counting the number of colonies arising on the GCK + Nitrofurantoin (3 μg/mL) plates after 48 hours of incubation at 37°C, 6% CO2, and dividing this number by the number of colonies arising on the GCK plates after 48 hours of incubation at 37°C, 6% CO2. Data represents experiments done in triplicate, with error bars representing standard error.Back to article page