Study examines how DNA damage is repaired by antioxidant enzymes

A typical human cell is metabolically active, roaring with chemical reactions that convert nutrients into energy and useful products that sustain life. These reactions also create reactive oxygen species, dangerous by-products ...

How dormant bacteria come back to life

Solving a riddle that has confounded biologists since bacterial spores—inert, sleeping bacteria— were first described more than 150 years ago, researchers at Harvard Medical School have discovered a new kind of cellular ...

Lipid expansion microscopy uses 'power of click chemistry'

Lipids—fats—make great walls for cells and organelles because they are water resistant and dynamic. But those same characteristics also make them hard to image using expansion microscopy, a technique that works for magnifying ...

Researchers identify key player in cellular response to stress

An enzyme called Fic, whose biochemical role was discovered at UT Southwestern more than a dozen years ago, appears to play a crucial part in guiding the cellular response to stress, a new study suggests. The findings, published ...

Effect of environmental contaminants on the health of pet cats

Companion animals are in close contact with human surroundings, and there is growing concern about the effects of harmful substances on the health of pet cats. This study investigated the potential health effects of organohalogen ...

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