Further study showed that the peripheral eosinophil counts of these two groups were as follows: 1) 0.5578 ± 1.3440(KI67 ≤ 5%); 2) 0.1382 ± 0.1651(KI67 > 5%) (Mean ± SD), suggesting that peripheral eosinophil counts decreased with the increases in KI67 proliferation index (Fig. 1A) and that the number of tumor-infiltrated eosinophils had the same trend (Fig. 1B). Here, MKI67 is linked to neoplasm.