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Tag: "sweep" at biology news

In nature, proteins sweep up nanoparticles

...vered a world in which bacteria emit proteins that sweep up metal nanoparticles into immobile clumps. Their...proteins into the environment. These proteins then sweep the sulfide nanoparticles out of solution into a ball. Scientists don’t why this occurs. Perhaps ...

Mimicking how the brain recognizes street scenes

...etina and passes in a fast feed-forward, bottom-up sweep through the hierarchical architecture of the visual cortex. What makes the Poggio lab's model so innovative and powerful is that, computationally speaking, it mimics the brain's own hierarchy. Specifically, the "layers" within the model replicate the...

Math model predicts cancer behavior

...nd Cummings expect to see this new way of thinking sweep through biology. "Particularly in cancer biology, we know so much about tumors, but we can do so little: why is that"" Quaranta said. "I think the reason is that we need additional tools, and those are the tools of mathematics." The team's model ...

Key to lung cancer chemo resistance revealed

... the production of other proteins and enzymes that sweep the cell clear of toxins. To halt the detox process, proteins manufactured by KEAP1 bind to the NRF2 triggers tagging them for destruction. In cancer cells, NRF2 activity runs amok, sweeping away all cellular toxins, including chemotherapy agents. ...

Chemical guidance of T cells leads to immunologic memory and long-term immunity

...to a large population of active clones, which then sweep through the body, hunting down and killing infected cells. For CD8+ T-cell activation to occur in the lymph node, the cell must encounter its target antigen--but that antigen must be displayed on the surface of another immune system cell, called a ...

Malaria parasites develop in lymph nodes

...malarial mosquito until immune cells come along to sweep them out, Ménard said. This second influx of parasites could prompt a somewhat different immune response in the host, and those parasites might have different fates. Parasites developing in the lymph nodes could have two opposite effects on the body'...

Stealth Worms May Improve Insect Pest Control

...ematodes in tropical rainforests," Stock says. "We sweep from the tops of the trees all the way to the ground, searching for nematodes that are potential insect pathogens. The misconception is that they are concentrated more in temperate zones, but this is not true. We're trying to unveil the mystery of ne...

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