Dr. Denise Law from the University of China in Hong Kong developed a technique for genetic diagnosis of the embryo by taking a blood sample from the mother.

The method is based on the discovery made in 1997. It lies in the fact that 3 to 5 percent of the DNA contained in the intercellular plasma of the maternal blood belongs to the embryo.

Earlier attempts to conduct prenatal diagnostics on blood cells were not very successful, since in the mother's blood one cell of the embryo accounts for a million of its own. It has already been shown that the new method allows after the seventh week of pregnancy to determine reliably the presence of certain genetic diseases in a future child. You can also determine the sex of the child in the early stages.

However, the author believes that his method should only be used to diagnose serious genetic diseases, and his use for sex selection is ethically unacceptable medicus. En.

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