Regional loss on the chromosome X. A loss of signals was detected across chromosome X, because the THP-1 cell line derived from a human male patient was compared with the reference human female genome. Two local deletions were also found (arrows). Weighted log ratio data appear as a scatter plot. Green points represent subthreshold values. The identified aberrant region is plotted as a bar graph and shaded in red, and the height of each bar corresponds to the average log ratio for that interval.