FIG. 3.

Effect of growth on CAS activity in K56-2 and K56-R2. The CAS activity (solid symbols) and turbidity (open symbols) of K56-2 (squares) and K56-R2 (circles) were measured at selected intervals during batch culture in succinate medium supplemented with 10 mM ornithine. The values shown are the means ± standard deviations (error bars) from triplicate experiments. Asterisks denote a statistically significant difference from K56-2 as determined by the t test for unpaired observations (P < 0.05).