Audina, Mia, et al. “3D Culture Cells Technique for Exosomes Isolation of HEK293 and Its Application on WiDr Cells”. HAYATI Journal of Biosciences, vol. 31, no. 6, Sept. 2024, pp. 1173-80, https://doi.org/10.4308/hjb.31.6.1173-1180.