Immunoblotting also revealed that the lysates of BAL cells of NSCLC presented a significantly higher protein level of IGKC (Wilcoxon signed-rank test, p < 0.01), for both the full-length (25 kD) and the cleaved forms, than the lysates of BAL cells of NC (Figure 8). Here, IGKC is linked to non-small cell lung carcinoma.