Steatosis was absent in the livers of TRI-exposed and unexposed mPPARα mice, but it was significantly increased in exposed versus unexposed Pparα-null and hPPARα mice; steatosis was significantly higher in Pparα-null mice exposed to 2,000 versus 1,000 ppm TRI [Table 2, Figure 1D–F; see also Supplemental Material, Table 1 (doi:10.1289/ehp.1001928)]. Here, PPARA is linked to steatosis.