Studies of the NCI-60 cell databank using the combined % γ-H2AX ELISA.

<p><b>(A)</b> Cell lines from the NCI-60 cell bank aligned in order of increasing total H2AX amounts per cell (left). The basal % γ-H2AX in unstressed cells for each cell line is shown on the right. Data from normal human fibroblasts (NHFs) is boxed. <b>(B)</b> Selected lines were arranged according to their basal % γ-H2AX values (red bars). Light gray, dark gray, and black bars represent the fold change in % γ-H2AX after 0.5, 2, and 5 Gy radiation, respectively, relative to the basal value (purple bars).