Scientists to attempt to rear swallowtail butterflies from eggs frozen in nitrogen

If successful, method could be used to support long-term conservation of species vulnerable to extinctionResearchers are to attempt to rear swallowtail butterflies from eggs frozen in liquid nitrogen in a test to see whether cryopreservation could support the long-term conservation of Britain's largest native species.In a groundbreaking project, researchers will freeze eggs of captive-bred European swallowtails in liquid nitrogen at -196C and attempt to rear butterflies from the unfrozen eggs, comparing their success with butterflies reared from eggs that have never been frozen. Continue reading...