In the above context, a strain is eligible for inclusion if its gene expression value
is |Z| ≥ 2.0 relative to all strains tested for a given probset in a given dataset.
(Different Z score thresholds will be applied depending on the query particulars:
one strain or two; single chromosome or entire genome; selected data sets or all.)
Female and male data are analyzed independently.
Gene expression data sets that evaluated less than 15 strains are not included.
The liver_HMDP_Lusis1 data set includes inbred strains as well as AXB, BXA, BXD, and BXH strains.
Outliers are computed with respect to all HMDP strains, as well as with respect to each strain panel subset.
Thus some probesets from this data set might appear twice in the list above.