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Body & Brain

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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.

mouse brain capillary

NO BARRIER A protein in some cells that form the blood-brain barrier (light blue, as seen in this image of a mouse brain capillary) may have a hand in brain aging, a new study suggests. 

illustration of biofilm

ANTIBIOTIC UPPER HAND  A new antibacterial ointment prevents communities of pathogens from forming slimy substances called biofilms (illustrated), where bacteria are shielded from antibiotics.

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