CXCL8 and mastitis: TNF-α, IL-6, and IL-8 were 0.05 ± 0.05 ng/mL, 33.13 ± 11.68 pg/mL, and 0.74 ± 0.4 pg/mL in our non-mastitis milk, versus 0.54 ± 0.35 ng/mL, 215.3 ± 31.31 pg/mL, and 7.35 ± 1.96 pg/mL in the mastitis milk, respectively, which were decreased to 0.02 ± 0.02 ng/mL, 41.4 ± 11.46 pg/mL, and 1.85 ± 0.6 pg/mL after YXT treatment (Figure 4).