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Genes & Cells

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human embryo

EMBRYO EDIT  Researchers in China and Texas have used CRISPR/Cas9 to repair disease-causing mutations in viable human embryos.

spraying DDT

DISEASE DEFENSE  To control the spread of dengue in Bangkok, DDT is sprayed to kill mosquitoes, the primary insect that transmits the virus.

GROWING PAINS  As cells divide and grow to replenish and repair organs, accidental mutations may crop up in cancer-associated genes. A new study suggests such random mistakes are the source of 66 percent of mutations in cancer cells (illustrated here) across the board.

Genes & Cells

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