Interspecific germline chimerism mediated by transplantation of primordial germ cells (PGCs) of wild species to domestic hosts promises the conservation of wild birds. Cryopreservation of avian eggs and embryos is impracticable, and currently only frozen PGCs enable conservation of both the male and female descendants. Purebred offspring have been obtained from germline chimeras of wild avian species, proving the feasibility of such technology.
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