Tumor growth and lung metastases formation is decreased after treatment with P2Et fraction. BALB/c mice were randomly assigned in control or treatment groups (7 mice per group). One week prior to tumor cell inoculation (day 0), the treatment group started P2Et fraction consumption administered in water. 4T1 cells (1 × 104) were injected into the right mammary fat pad SC on day 7. After 33 days, all animals were sacrificed. (a) Tumor volume. The graph represents the mean of each group with 7 animals per group. (b) Lung metastatic number. White tumor nodules against a blue lung background were counted by two independent observers. The graph represents the total animals by each group. For these experiments we used 5 animals per group.