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Genes & Cells

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in vitro fertilization

UNDER THE MICROSCOPE  The modern science of in vitro fertilization began 50 years ago, with an experiment in rabbits that selected for their sex.

a child playing with blocks on the floor

MIXED-UP MICROBES  Children with autism spectrum disorders have unusual mixes of gut microbes. Altering those mixes has positive, long-lasting effects on behavior, a study finds.

Ötzi the Iceman

GUT FEELING  Ötzi’s stomach was covered in fungi, but researchers still managed to reveal new details about the Iceman’s last meal.

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