Genome-wide scanning to identify chromosome location of mHag. χ2 values were plotted against positions on each chromosome for each of 3 mHags recognized by CTL-4B1 (A), CTL-3B6 (B), and CTL-1B2 (C). Chromosomes are displayed in alternating colors. Threshold χ2 values corresponding to the genome-wide P = 10−3 (dark blue) and 10−2 (light blue), as empirically determined from 100 000 random permutations, are indicated by broken lines, while the theoretically possible maximum values are shown with red broken lines. The highest χ2 value in each experiment is indicated by a red arrow.