Researchers learn why immune system's watch dogs howl

Toll-like receptors are the guard dogs of the immune system, sniffing out bacteria and viruses then activating the body’s immune system for an attack on these invaders.

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<p><a href="http://www.physorg.com/news105291792.html">Researchers learn why immune system's watch dogs howl</a></p> <p>Toll-like receptors are the guard dogs of the immune system, sniffing out bacteria and viruses then activating the body’s immune system for an attack on these invaders.</p>