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Tag: "invader" at biology news

New bird, bat species revealed by extensive DNA barcode studies

...through many generations to establish itself as an invader of different organs in the body. But once it is there, like any newly stabilized species in different ecological niches, cancer is tough to get rid of. The former University of Alberta biologist has been working with DNA ?the molecule that carries ...

Cancer that colonizes our bodies

...through many generations to establish itself as an invader of different organs in the body. But once it is there, like any newly stabilized species in different ecological niches, cancer is tough to get rid of. The former University of Alberta biologist has been working with DNA ?the molecule that carries ...

PNAS study reveals why organs fail following massive trauma

...hape to link up with, and become activated by, any invader encountered. When one of those immune cells, calle...army of clones specifically designed to attack the invader at hand. Unfortunately, lymphocytes too are capable of mistakenly destroying human cells. Thus, they...

Researchers find that bumblebees' flower choice matters

...she has spent working at the garden, she says, the invader plant is the heavier "bee magnet." And if that's the case, purple loosestrife is luring pollinators away from the native plants. To investigate her hunch further, Flanagan added a third wetland species to the garden ?a native plant known as "great...

Invasive species alter habitat to their benefit

...f the decline in native species. Do you target the invader or try to minimize human interference?" Farrer began by surveying marshes in northern Michigan to find out what kinds of cattails were there. The state is home to three cattail species: the native broad-leaf cattail; the invasive narrow-leaf cattai...

Wild vs. lab rodent comparison supports hygiene hypothesis

...to action by producing antibodies that bind to the invader and destroy it. Of the many classes of immunoglobulins (Ig), the IgG type is often involved in autoimmune disease, while the IgE type is likely a key defender against parasites and has been implicated in allergic reactions in humans, Parker said. F...

Mice lacking key immune component still control chronic viral infections

...ronic herpes virus infections, the body brings the invader under control, reducing its replication and spread, but is unable to completely eliminate it, resulting in lifelong infection. The mice in the study were injected with murine gamma herpes virus 68, a herpes virus that infects mice and is closely re...

APS lecturer shows rare video of 'teacher-student' immune cell interactions in live animal

...ves at the lymph node, it presents the dismembered invader to the T and B white blood cells in a way that rin..., he said. When dendritic cells capture a foreign invader and bring it to the lymph node, many T cells stop by before one is able to recognize it. "The system...

Gene thwarts some pathogens, gives access to others, could save crops

A single gene apparently thwarts a disease-causing invader that creates a fuzzy gray coating on flowers, fruits and vegetables. But the same gene provides access to a different type of pathogen. A Purdue University plant molecular biologist and his collaborators in Austria and North Carolina identified the ...

Malaria parasites develop in lymph nodes

...e, he explained. They might alert the body that an invader is present and activate a protective immune response. On the other hand, their presence in the lymph nodes might desensitize the body to the parasites, blunting the immune system's response to liver and blood-cell infection. "We have to integrate ...

Ancient DNA helps UF researchers unearth potential hemophilia therapy

...mmune system normally views clotting protein as an invader and rejects it after traditional gene therapy. But UF researchers bypassed this immune response by performing gene therapy on mice within 24 hours of their birth, when their immune systems were still naive and would accept the protein. This type of ...

Scientists observe how a close bond activates the immune system

...equired to marshal an immune response to a foreign invader can number in the millions as the body's soldiers, T cells, are called into action. What triggers this complex response begins when T cells and dendritic cells, another type of immune cell, form a kind of molecular embrace, or immunological synapse, ...

When it comes to cell entry, being average has its advantages

...ally to involve clathrin, a protein that coats the invader to aid in the Velcro-like fastening. Yet scientists have shown that flu viruses can invade cells even without a clathrin coat. Along with Huajian Gao and Wendong Shi from Max Planck, Freund created a mathematical model that can account for this. Part...

Specialized immune-system B cells play double-barreled role

... system develops a long-term immune response to an invader after vaccination or infection. The researchers -- Karen Haas, Jonathan Poe, Douglas Steeber and Thomas Tedder -- published their findings in the July 2005 issue of the journal Immunity. The research was sponsored by the National Institutes of Healt...

FDA approves more generic AIDS drugs

...cells quickly commit suicide, often preventing the invader from destroying the entire plant. The new discovery appears to be a universal mechanism for defense by all plants against not only bacteria and viruses, but also parasitic fungi, insects and worms, he said. "This work is important because every yea...

UNC plant researchers discover proteins interact to form hair-trigger protection against invaders

...cells quickly commit suicide, often preventing the invader from destroying the entire plant. The new discovery appears to be a universal mechanism for defense by all plants against not only bacteria and viruses, but also parasitic fungi, insects and worms, he said. "This work is important because every yea...

Finding hidden invaders in a Hawaiian rain forest

...new techniques allowed the scientists to detect an invader before it dominated the landscape is important to ...d there is more nitrogen in the soil. However, the invader shades out nearly all other species, so this excess nitrogen is not available to other species. Alth...

Genetic defects give the immune system the green light to attack the pancreas

... their outer membrane are shaped to dock with each invader and destroy it. “As T-cells form, it is not uncommon for a few to randomly develop with the potential ability to attack the body’s own cells,?said Dr. Holler. “That’s when a safeguard mechanism normally kicks in to eliminate these errant T-cells. Ou...

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