Western blotting and qRT-PCR analyses were performed to quantify the expression levels of HER2, CXCL13, and CCL20 in the normal bronchial epithelial cell line BEAS-2B and several lung cancer cell lines (PC9, A549, H1734, H1975, H1299, and HCC827). The gene discussed is CXCL13; the disease is lung carcinoma.