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Host (biology)

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In biology, a host is an organism that harbors a virus or parasite, or a mutual or commensal symbiont, typically providing nourishment and shelter. In botany, a host plant is one that supplies food resources and substrate for certain insects or other fauna. Examples of such interactions include a cell being host to a virus, a legume plant hosting helpful nitrogen-fixing bacteria, and animals as hosts to parasitic worms, e.g. nematodes.

For more information about Host (biology), read the full article at Wikipedia.
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News tagged with host cell

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Parasite evades death by promoting host cell survival

Parasite evades death by promoting host cell survival

Chemistry / Biochemistry

created Dec 08, 2009 | popularity not rated yet | comments 0

Researchers have discovered how the parasite Trypanosoma cruzi, which causes Chagas' disease, prolongs its survival in infected cells. A protein on the parasite activates the enzyme Akt, which blocks cell ...


It takes two to infect: Structural biologists shed light on mechanism of invasion protein

Biology / Cell & Microbiology

created Nov 30, 2009 | popularity 5 / 5 (1) | comments 0

Bacteria are quite creative when infecting the human organism. They invade cells, migrate through the body, avoid an immune response and misuse processes of the host cell for their own purposes. To this end every bacterium ...


Blocking biofilms: Alzheimer's research sheds light on potential treatments for urinary tract infections

Chemistry / Biochemistry

created Nov 25, 2009 | popularity 5 / 5 (1) | comments 0

(PhysOrg.com) -- Research into Alzheimer's disease seems an unlikely approach to yield a better way to fight urinary tract infections (UTIs), but that's what scientists at Washington University School of Medicine in St. Louis ...


Researchers identify new mechanism of blocking HIV-1 from entering cells

Medicine & Health / HIV & AIDS

created Nov 30, 2009 | popularity not rated yet | comments 0

Publishing in PLoS Pathogens, researchers at from the Kimmel Cancer Center at Jefferson have found a novel mechanism by which drugs block HIV-1 from entering host cells.





Search results for host cell


Taming the flu: Researchers create map of interactions between flu virus and its human host

Taming the flu: Researchers create map of interactions between flu virus and its human host

Biology / Cell & Microbiology

created Dec 18, 2009 | popularity 5 / 5 (1) | comments 0

(PhysOrg.com) -- There is no lack of worry this season over the flu, both the seasonal and H1N1 varieties, but there is a critical lack of understanding of the viruses that cause these illnesses. For years, ...


Researchers find human protein that prevents H1N1 influenza infection

Medicine & Health / Research

created Dec 17, 2009 | popularity 5 / 5 (5) | comments 1

Howard Hughes Medical Institute researchers have identified a naturally occurring human protein that helps prevent infection by H1N1 influenza and other viruses, including West Nile and dengue virus.


Invasion without a stir

Biology / Cell & Microbiology

created Dec 17, 2009 | popularity not rated yet | comments 0

Bacteria of the genus Salmonella cause most food-borne illnesses. The bacteria attach to cells of the intestinal wall and induce their own ingestion by cells of the intestinal epithelium. Up till now, researchers assumed ...


Researchers find cells move in mysterious ways

Researchers find cells move in mysterious ways (w/ Video)

Biology / Cell & Microbiology

created Dec 16, 2009 | popularity 4 / 5 (2) | comments 0

Our cells are more like us than we may think. They're sensitive to their environment, poking and prodding deliberately at their surroundings with hand-like feelers and chemical signals as they decide whether ...


Bacterial protein mimics its host to disable a key enzyme (w/ Video)

Biology / Cell & Microbiology

created Dec 11, 2009 | popularity 5 / 5 (3) | comments 1

(PhysOrg.com) -- Bacteria use all sorts of cunning to trick hosts into doing their bidding. One con in their bag of tricks: the molecular mimic. In this ruse, bacteria or their agents look for all purposes like some native ...


Scientists find way to catalog all that goes wrong in a cancer cell

Medicine & Health / Cancer

created Dec 10, 2009 | popularity 4.7 / 5 (3) | comments 0

(PhysOrg.com) -- A team of Princeton University scientists has produced a systematic listing of the ways a particular cancerous cell has "gone wrong," giving researchers a powerful tool that eventually could make possible ...


Mechanism discovered by which body's cells encourage tuberculosis infection

Mechanism discovered by which body's cells encourage tuberculosis infection

Medicine & Health / Research

created Dec 10, 2009 | popularity 4 / 5 (1) | comments 0

Scientists have discovered a signaling pathway that tuberculosis bacteria use to coerce disease-fighting cells to switch allegiance and work on their behalf. Epithelial cells line the airways and other surfaces ...


Study reveals H1N1 unexpected weakness

Study reveals H1N1 unexpected weakness

Medicine & Health / Research

created Dec 10, 2009 | popularity 4.8 / 5 (19) | comments 7

The H1N1 influenza virus has been keeping a secret that may be the key to defeating it and other flu viruses as well.


Synthetic protein mimics structure, function of metalloprotein in nature

Synthetic protein mimics structure, function of metalloprotein in nature

Chemistry / Biochemistry

created Dec 10, 2009 | popularity 5 / 5 (1) | comments 1

Scientists have designed a synthetic protein that is both a structural model and a functional model of a native protein, nitric-oxide reductase.


'Mini' transplant may reverse severe sickle cell disease

Medicine & Health / Research

created Dec 09, 2009 | popularity 5 / 5 (2) | comments 0

Results of a preliminary study by scientists at the National Institutes of Health and Johns Hopkins show that "mini" stem cell transplantation may safely reverse severe sickle cell disease in adults.



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