A brief post at Real Clear Science on a recent discovery in human immunology:
Think again if you thought that doctors had long since identified and described exactly how the body defends itself against microorganisms.
Scientists have recently discovered a whole new side to the immune system: a rapid immune response that kicks in well before any of the other known mechanisms.
“I hate to use the term ‘text books will write about this’, but this [discovery] really is brand new and we will need to write a new chapter,” says co-author Søren R. Paludan, professor of virology and immunology form the Department of Biomedicine, Aarhus University, Denmark.
In collaboration with groups from the US and Germany, the scientists showed that when the body’s outer defence, the mucosa lining that surrounds certain organs, is disturbed by a virus, the underlying layer of cells are the first to react and sound the alarm. They summon the body’s cell soldiers, which attack the invading virus.
Both this alarm system and the ‘soldier’ cells operate completely separately from what were believed to be the first responders to immune system attacks.
