FIG. 1.

TSST-1 production by S. aureus MN8 in batch cultures flushed with gas mixtures containing various oxygen concentrations balanced with nitrogen. (A) Time course measurements of TSST-1 production in each batch culture. (B) Concentration of TSST-1 in each batch culture at 6 h. Data are means ± standard errors of the means of triplicate ELISA readings for each time point. Toxin production was measured in at least two independent batch cultures at each oxygen concentration, with similar results.