We also found the neutrophil activating peptide C-X-C motif chemokine 5 (CXCL5) to be significantly higher in the infertile heifers (P = 0.04, 1.53 ± 0.27 fold), when compared to the fertile heifers (1.04 ± 0.07 fold) (Fig. 5c). Here, CXCL5 is linked to Infertility.