In addition, dairy cows diagnosed with cytological endometritis (neutrophil percentage > 18 determined by EC) at T30 showed a higher expression of PD-1 by T lymphocytes at T0 (P = 0.009) as well as a tendency for a higher expression of PD-1 at T30 (P = 0.09; Figure 2). This evidence concerns the gene PDCD1 and endometritis.