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E.g., 02/19/2019
E.g., 02/19/2019
Your search has returned 114 images:
  • Pau da Lima neighborhood
  • fruit fly brain
  • 3-D visualization chloroplasts fighting microbes
Your search has returned 150 articles:
  • News in Brief

    In some cases, getting dengue may protect against Zika

    Previous infections with dengue virus may have protected some people in an urban slum in Brazil from getting Zika.

    In a study of more than 1,400 people in the Pau da Lima area of Salvador, those with higher levels of antibodies against a particular dengue virus protein were at lower risk of contracting Zika, researchers report in the Feb. 8 Science. “The higher the antibody, the higher...

    02/07/2019 - 14:00 Health, Immune Science
  • News

    This bacteria-fighting protein also induces sleep

    “Feed a cold, starve a fever,” or so the adage goes. But fruit fly experiments suggest that sleep may be a better remedy.

    A microbe-fighting protein helps control how much and how deeply fruit flies sleep, researchers report in the Feb. 1 Science. That’s evidence that sleep speeds recovery from illness, they conclude.

    “We finally have a very clear link between being sleepy and...

    01/31/2019 - 14:03 Genetics, Physiology, Immune Science
  • Science Visualized

    How light-farming chloroplasts morph into defensive warriors

    Chloroplasts may seem like docile farmers of light. But inside these microscopic plant and algal cell structures lurks the spirit of a warrior.

    When a pathogen attacks a plant, chloroplasts stop making food from sunlight and rush to the site of infection to help fend off the invader. Now, researchers have identified the protein that mobilizes these organelles into a defensive army.

    ...
    01/28/2019 - 08:00 Plants, Cells, Immune Science
  • News in Brief

    Gut bacteria may guard against diabetes that comes with aging

    Losing one variety of gut bacteria may lead to type 2 diabetes as people age.

    Old mice have less Akkermansia muciniphila bacteria than young mice do, researchers report November 14 in Science Translational Medicine. That loss triggers inflammation, which eventually leads cells to ignore signals from the hormone insulin. Such disregard for insulin’s message to take in glucose is known as...

    11/19/2018 - 10:55 Microbiology, Physiology, Immune Science
  • News

    How a life-threatening allergic reaction can happen so fast

    Within minutes of biting into peanut-tainted food, people with a peanut allergy may find their pulse quickening, blood pressure plummeting and throat closing up. They’re experiencing a rapid and sometimes fatal allergic reaction called anaphylaxis.

    New research in mice explains how even a small amount of an allergen can quickly trigger such a strong, full-body reaction. The culprit is a...

    11/08/2018 - 14:00 Immune Science, Health
  • Feature

    How to make organ transplants last

    Trent Jackson’s life changed abruptly in early 2015. The computer engineer thought he had the flu. His then-wife, Donna Sylvia, thought differently. His skin was turning a dark golden yellow, almost brown, “like he was getting some kind of weird tan,” she says. On Wednesday, January 28, Sylvia and Jackson’s brother Todd finally persuaded Jackson to see a doctor.

    Sylvia’s suspicions were...

    10/21/2018 - 05:00 Immune Science, Cells, Clinical Trials
  • News

    Smuggling a CRISPR gene editor into staph bacteria can kill the pathogen

    Bits of DNA that make bacteria dangerous can be co-opted to bring the microbes down instead.

    Stretches of DNA called pathogenicity islands can jump between bacteria strains, introducing new toxin-producing genes that usually make a strain more harmful. Scientists have now modified pathogenicity islands by replacing the toxin-producing genes with genes that, in mice, disabled or killed...

    10/01/2018 - 09:00 Genetics, Immune Science
  • 50 years ago, a flu pandemic spurred vaccine research

    Girding against a new strain

    Flu comes in many kinds, and the current vaccine … has little effect against a newcomer that has afflicted at least 400,000 persons in Hong Kong. The Asian city was the source of the 1957 epidemic in the United States. Fears that it may provide a springboard for another one have caused the Public Health Service to ask eight pharmaceutical companies to...

    09/21/2018 - 09:00 Health, Immune Science, History of Science
  • News

    Nasty stomach viruses can travel in packs

    Conventional wisdom states that viruses work as lone soldiers. Scientists now report that some viruses also clump together in vesicles, or membrane-bound sacs, before an invasion. Compared with solo viruses, these viral “Trojan horses” caused more severe infections in mice, researchers report August 8 in Cell Host & Microbe.

    Cell biologist Nihal Altan-Bonnet had been involved in...

    08/08/2018 - 11:00 Cells, Immune Science, Microbiology
  • News

    This tick may play a part in gumming up your arteries

    It sounds bonkers that a tick bite might make meat eaters allergic to their steaks and ribs, but it’s true. Now new research has added a potential twist: The source of this tick-related sensitivity to red meat may also be linked to coronary artery disease.

    A bite from the lone star tick, Amblyomma americanum, can trigger antibodies to a sugar called alpha-gal, found in many mammals but...

    07/30/2018 - 07:00 Health, Immune Science