Sitti Ayu Suhartina Yahya, Mustofa, Woro Rukmi Pratiwi and Adika Suwarman 2022. Cytotoxic activity of hantap (Sterculia oblongata Mast) leaves extract against breast cancer cells line (MCF7/HER2): the effect on the expression of HER2 mRNA and the apoptosis. Indonesian Journal of Pharmacology and Therapy. 3, 1 (Apr. 2022). DOI:https://doi.org/10.22146/ijpther.3204.