The results showed increased number of both CD3+CD4+ and CD3+CD8+ T cells in spleen and tumor tissues in 3LL/shCXCL1 group compared to 3LL/NC control group (Figures 4(a) and 4(b)), suggesting that the higher density of neutrophils was paralleled with the decreased T cells number in lung cancer. This evidence concerns the gene CD4 and lung carcinoma.