FIGURE 4.

Betulinic acid inhibits gastric cancer cells growth and pulmonary metastasis in vivo. A, Representative images of tumour in different groups after different treatment at 21 days. B, Curve of tumour growth in the process of treatment. C, Tumour weight in different groups after different treatment at 21 days. D, Number of metastasis nodules in lungs of different treated groups. E, The weight of lungs from different treated groups. F, H&E analysis of lung sections of different treated groups. Significant differences were indicated as *P ≤ .05; **P ≤ .01; ***P ≤ .001