Correlations with r < 0.5 or p > 0.005 or nstrains < 10 are not retained.
The large number of eligible probeset data instances increases the liklihood of strong mathematical correlations occurring by chance.
For gene symbols, current MGI coordinates take precendence over GX annotation so additional flank may be helpful.
 DPV = data point variance filter.
Stricter settings will omit instances where data points have more variance.
To see DPV hover your mouse pointer over the p value.