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Glowing tumor marker may interfere with cancer studies in mice, creating reproducibility problems | Science

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Cancer biologist Cyrus Ghajar was gearing up to study how the immune system can fight breast cancer when he hit a snag: The supposedly fast-spreading cancer cells he implanted in mice stayed put and sometimes even disappeared after about 11 days. Then postdoc Candice Grzelak identified the culprit: the green fluorescent protein (GFP) the researchers … Read more

Purple space ‘lightning’ spews from stellar corpse, creating cosmic shock waves (photo, video)

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A streak of purple “lightning” sprawls across the cosmos in a gorgeous new image from NASA. Light and energy twist and turn in an explosive relationship between a stellar corpse known as a white dwarf and a variable red giant star called R Aquarii (R Aqr) orbiting each other out in space. NASA’s Chandra X-ray … Read more