Risk of pathogenic virus transmission by somatic cell nuclear transfer: implications for xenotransplantation

Abstract excerpt

Using somatic cell nuclear transfer for the generation of cloned and transgenic animals bears the risk of transmission of viruses, either by the oocyte or by the introduced donor cell. There is evidence that the zona pellucida (ZP) surrounding the oocyte prevents virus infection; however, virus infections despite intact ZP were reported. Furthermore, the protective ZP has to be penetrated to place the somatic...

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