RSS Daily HIV News and Researches News - Exhaustion Of HIV-specific T Cells May Be Caused By Chronic Exposure To Virus

The "exhaustion" of immune cells that target HIV appears to result from chronic exposure to the virus, specifically exposure to the protein segments targeted by the pathogen-killing HIV-specific CD8 T cells. A study from researchers at the Partners AIDS Research Center at Massachusetts General Hospital may have answered a key question: whether the functional impairment of these T cells is the cause or the result of unchecked viral replication in chronic progressive HIV-1 infection?

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SPRINGHILL, WV- MAY 12: Democratic presidential hopeful Sen. Barack Obama (D-IL) smiles as he plays a game of pool during a stop at Schultzie's Bar & Hot Spot May 12, 2008 in Springhill, West Virginia. Obama and Sen. Hillary Clinton (D-NY) continue to battle for the Democratic presidential nomination.

Barack Obama made one of his first major tactical errors of the campaign by ignoring West Virginia's largely working-class, rural voters.

Firefighters try to extinguish a blaze in a northern suburb of Lagos following an explosion on an oil pipeline reportedly ruptured by a piece of earthmoving equipment. About 100 people were burnt to death Thursday when an oil pipeline exploded in a northern suburb of Nigeria's biggest city Lagos, the Red Cross said.(AFP)

AFP - An oil pipeline explosion killed about 100 people on Thursday near a primary school in a suburb north of Lagos, the Red Cross said.

A U.S. soldier takes up position to secure the site of a bomb attack that targeted Sunni Islamic political party headquarters, which police said killed three people and wounded 23 others in Baghdad's Yarmouk district, May 14, 2008. (Mushtaq Muhammed/Reuters)

Reuters - The House of Representatives, in a surprise and largely symbolic move, defeated legislation on Thursday to fund the war in Iraq for another year.