A new study looking at immune responses to some of the big viral killers (HIV, Hep B etc) and cancers show that chronic infection exhausts the T cells over time, but that by blocking some of the pathways of this exhaustion process, it can sometimes reverse the T-cell exhaustion.
The study was done in mice, but the authors say that the findings have implications for human infections as well.
The study article was published in Immunity on October 18th, 2007, but also got covered by ScienceDaily.
http://www.sciencedaily.com/releases/2007/10/071018123550.htm
Interesting to see where this research goes!
-Deshka
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