Embryonic stage selection for cryopreservation of the silkworm Bombyx mori and the effects of cryopreservation on embryo tissues.

Successful cryopreservation of the important silkworm bioresource, Bombyx mori, is essential. In this study, we aimed for successful cryopreservation using vitrification of silkworm embryos. Furthermore, the embryos were assessed for the most appropriate sampling stage.