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Genes & Cells

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Southeast Asian hunter-gatherers

SCENT MASTERS  Southeast Asian hunter-gatherer communities display an ability to name different odors not observed in Western nations or even in a neighboring farming group. Here, two of these hunter-gatherers clear an area to enable the growth of durian, a sweet-tasting but foul-smelling fruit.

Streptococcus pyogenes

BUGGED  In this scanning electron microscope image, Streptococcus pyogenes bacteria (yellow) are shown on top of a white blood cell. Different strains of the bacteria trigger a different reaction from the immune system thanks to extra genes that vary among strains.

illustration of scissors cutting DNA

TECHNICAL DIFFICULTIES  Scientists doing gene editing need to be aware of potential immune system attacks against a DNA-cutting protein.

Genes & Cells

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