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.

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News tagged with host cell

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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 ...


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 ...


No-entry zones for AIDS virus

No-entry zones for AIDS virus

Medicine & Health / HIV & AIDS

created Nov 12, 2009 | popularity not rated yet | comments 0

The AIDS virus inserts its genetic material into the genome of the infected cell. Scientists of the German Cancer Research Center have now shown for the first time that the virus almost entirely spares particular ...


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.


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 ...