Schiewe, M. C., Zozula, S., Nugent, N., Waggoner, K., Borba, J., Gamboa, L., Whitney, J. B. Modified MicroSecure Vitrification: A Safe, Simple and Highly Effective Cryopreservation Procedure for Human Blastocysts. J. Vis. Exp. (121), e54871, doi:10.3791/54871 (2017).