In this video-article we present a step-by-step demonstration on how to collect and cryopreserve hamster oocytes with high post-thaw survival rates. The same procedure can also be applied to successfully freeze and thaw mouse embryos at different stages of preimplantation development.
Costa-Borges, N., González, S., Ibáñez, E., Santaló, J. Collection and Cryopreservation of Hamster Oocytes and Mouse Embryos. J. Vis. Exp. (25), e1120, doi:10.3791/1120 (2009).