There's a story in the Guardian about a new technique that uses CGH instead of FISH for screening out defective embryos that have chromosomal abnormalities in women trying to get pregnant by in vitro fertilization. In a study led by scientists at Oxford University and Reprogenetics UK, and the Colorado Center for Reproductive Medicine, 78 percent of the 23 women who underwent IVF in the study became pregnant with embryos screened using CGH.

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The UK's Nuffield Council on Bioethics says genetically modifying human embryos could be morally permissible, according to the Guardian.

A new Nature Biotechnology paper reports that CRISPR-Cas9 gene editing can lead to large deletions or complex rearrangements that could be pathogenic.

The Wall Street Journal likens a prototype developed by Synthetic Genomics to a "biological fax machine."

In PNAS this week: strategy for reactivating Rett syndrome-linked MECP2, small molecules able to suppress Staphylococcus aureus virulence, and more.