RAD51 and non-small cell lung carcinoma: The tumor growth curves indicated by the tumor volumes (Figure 7D) and the tumor weights (Figure 7E) both showed that A549/shRAD51 #1 cells were more sensitive to (−)-Guaiol, consolidating that RAD51 inhibition would greatly enhance the chemosensitivity of NSCLC cells to (−)-Guaiol.