Widowati, W., Jasaputra, D.K., Onggowidjaja, P., Sumitro, S.B., Widodo, M.A., Afifah, E., Rihibiha, D.D., Rizal, R., Amalia, A., Kusuma, H.S.W., Murti, H. and Bachtiar, I. 2019. Effects of Conditioned Medium of Co-Culture IL-2 Induced NK Cells and Human Wharton’s Jelly Mesenchymal Stem Cells (hWJMSCs) on Apoptotic Gene Expression in a Breast Cancer Cell Line (MCF-7). Journal of Mathematical and Fundamental Sciences. 51, 3 (Dec. 2019), 205-224. DOI:https://doi.org/10.5614/j.math.fund.sci.2019.51.3.1.