Chromium compounds induce DNA damage in yeast (A–D) and Jurkat cells (E–H).

<p>(A, E) Cells were not treated with chromium or a DNA damage treatment. (B) Cells were treated with 20 µM H₂O₂ for 30 minutes. (C, G) Cells were treated with 300 µM CrO₃ for 24 hours. (D, H) Cells were treated with 150 µM CrCl₃ for 24 hours. (F) Cells were exposed to UV for 1 hour. The slides were viewed using a fluorescent microscope at magnification 200× (A–D) and 100× (E–H).