Buckam-Sporer et al. reported that transportation stress altered the expression of four neutrophil genes whose protein products are key in the regulation of inflammation (Fas, L-selectin, and matrix metallopeptidase 9 (MMP-9) and the clearance of Gram-negative bacterial infections (bactericidal/permeability-increasing protein (BPI)), but left the expression of three genes (betaglycan, A1, GRα) known to be affected in other models of bovine stress unchanged [97]. Here, MMP9 is linked to gram-negative bacterial infections.