Fig. 7

OL inhibited the growth of SCCHN xenograft tumor. M2 cells were treated with PBS (control group) and 1200 µg/mL OL (OL group) for 24 h, then the cells were subcutaneously injected into the submaxillary area of 7-week-old male nude mice (n = 5 for each group). A The xenograft tumor volumes were measured every two days and the growth curve was compiled (*p <0.05, **p <0.01 vs. control group). B The mice were sacrificed on the fourteenth day after transplantation, and the photos of the isolated xenograft tumors of the two groups were taken