Fig. 4
From: A ferritin-like protein with antioxidant activity in Ureaplasma urealyticum
The uuferritin gene complements the E. coli Δdps mutant in the assay of colony patches (a) and survival ratio (b). The presence of the uuferritin gene increased the survival of the E. coli Δdps mutant strain under the 30 mM H2O2 or 25 mM Fe2+ stress, but the pTrc99a alone had no effect on survival. **p < 0.01 by U-test. Bars represent SD (n = 3)