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Preimplantation Genetic Diagnosis (PGD) or Screening(PGS)

Preimplantation Genetic Diagnosis (PGD) or Screening(PGS)

PGS-vs-PGD

What is Preimplantation Genetic Diagnosis (PGD) or Screening(PGS) ?
Preimplantation genetic diagnosis (PGD) refers specifically to when one or both genetic parents has a known genetic abnormality and genetic testing is performed on an embryo to determine if it also carries a genetic abnormality. Preimplantation genetic screening (PGS) refers to techniques where embryos from presumed chromosomally normal genetic parents are screened for aneuploidy.

This Technique was applied in :

  • The successful sexing of rabbit blastocyst in 1967.
  • and was successfully used for sex determination for patients carrying X-linked diseases in human in 1989.

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