Helicteric Acid, Oleanic Acid, and Betulinic Acid, Three Triterpenes from<i>Helicteres angustifolia</i>L., Inhibit Proliferation and Induce Apoptosis in HT-29 Colorectal Cancer Cells via Suppressing NF-<i>κ</i>B and STAT3 Signaling
Evidence-based complementary and alternative medicine