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Genes & Cells

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Neandertal brain

BRAIN ACTIVITY  Human versions of some genes are more active in certain parts of the brain than Neandertal versions. Side and back views of a brain show that activity levels of the Neandertal version of a gene called NTRK2 are lower in the cerebellum (blue area in lower back) than in other regions.

cancer cells

OXYGEN DEPRIVATION  Cancer cells (shown in blue) surround a blood vessel (red) in a mouse tumor. Cells on the tumor’s edge are dying, starved of oxygen. But treatments to starve tumors have come up short.

Pueblo Bonito

DYNASTIC CENTER  Recovered DNA suggests that nine people buried in a huge structure called Pueblo Bonito (shown), located in northwestern New Mexico, belonged to a maternal dynasty that lasted for 330 years during the heyday of ancient Chaco society.

Genes & Cells

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