Compared with CON lambs, MyD88; IL-6; TLR-9; IL-1β; TLR-4; NF-κB; TNF-α; Fas; P53; caspase-3, 8, and 9; and Bax mRNA levels in livers of IUGR lambs were higher (P < 0.05) (Table 7), whereas those in lambs treated with Arg or NCG were reduced (P < 0.05) in comparison with those in IUGR lambs. The gene discussed is TLR4; the disease is fetal growth restriction.