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The effect of supplementing receiving steers with methionine at 0 (L0), 2.2 (L1), or 4.4 (L2) g/steer/d for 40 d on the change in serum Interleukin-1α (IL-1α) response to an LPS (0.25 µg/kg body weight) challenge. For the change in IL-1α concentrations, there was a treatment × time interaction (P = 0.02). a,bTreatments with different superscripts within time points differ P < 0.05.
