Moreover, the expressions of exosomal proteins (CD63, TSG101, CD9 and CD81) were significantly higher in exosomes derived from NSCLC or BEAS-2B cells (A549-exo and BEAS-2-exo), compared with A549 or BEAS-2B cells (Figure 4C). This evidence concerns the gene CD63 and non-small cell lung carcinoma.