Fig. (2) Changes in the surface molecules of milk neutrophils in healthy, subclinical, and clinically infected mastitis KF cows. Expression of CXCR1, CXCR2 and IL-8 increased significantly in the milk neutrophils with progression of subclinical and clinical mastitis, whereas, significant increase in the expression of CD-11b was observed only in case of clinical mastitis cows. Expression of CD-44 molecule increased significantly in subclinical mastitis cows, whereas it was decreased significantly in clinically infected mastitis cows. No change was observed in the expression of CD-62L, in the milk neutrophils of healthy, subclinical and clinical mastitis cows.