After co-culture LPS and IL-8 stimulated UCB-derived neutrophils with ovarian cancer cell line SKOV3 and OVCAR3 for 16h respectively, medium including neutrophils was discarded, then CCK8 was used to assess the proliferation of SKOV3 and OVCAR3 at 0h, 12h, 24h, 48h, 72h respectively. Here, CXCL8 is linked to ovarian carcinoma.