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Referee Comments: Referee 2

Posted by PLOS_ONE_Group on 12 May 2008 at 17:51 GMT

Referee 2's review:

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N.B. These are the comments made by the referee when reviewing an earlier version of this paper. Prior to publication, the manuscript has been revised in light of these comments and to address other editorial requirements.
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New data with PTX and an A1 receptor antagonist appear to confirm the hypothesis presented by the authors.