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2011-01-20 11:40:00

Researchers have for the first time mapped the complex choreography used by the immune system's T cells to recognize pathogens while avoiding attacks on the body's own cells. The researchers found that T cell receptors "“ molecules located on the surface of the T cell "“ first bind with the antigen on the pathogen-invaded cell. That initiates a signaling process which leads a co-receptor on the T cell to also bind with the molecule that presents the antigen, amplifying the effect....

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2010-03-31 14:27:54

T cell receptors are among the most important molecules in the immune system because of their role in recognizing the antigens that signal such threats as viruses and cancer. The receptors must also distinguish these threats from the body's own cells to avoid triggering an unwanted immune system response. Recognition requires direct physical contact between the receptor and the antigen. Researchers attempting to understand this critical mechanism, therefore, have been studying such factors as...


Word of the Day
glogg
  • Scandinavian punch made of claret and aquavit with spices and raisins and orange peel and sugar.
This word comes from the Swedish 'glogg,' which is an alteration of 'glodgat,' mulled (wine).
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