Phase-contrast photomicrographs of human kidney (HK-2) cells.

<p>Photomicrographs were taken 6 hr later from either untreated control (HK-2 cells) (A), or treated with supernatants from CFT073 WT (B), <i>csrA</i> (C), <i>barA</i> (D), <i>uvrY</i> (E), <i>hlyD</i> (F), <i>barA</i>/p-<i>barA</i> (G), <i>uvrY</i>/p-<i>uvrY</i> (H) and <i>hlyD</i>/p<i>-hlyD</i> (I). The rounding and detachment of cells in the treated monolayer are marked with arrow or arrowhead. The pictures were representative of three individual experiments.