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Referee comments: Referee 2

Posted by PLOS_ONE_Group on 18 Feb 2008 at 18:24 GMT

Referee 2's review:

Paper contains excellent and important data.
At table 2, I believe there is a missing line (line (1)). This table can be better formated.

At table 3, second phrase of legend, "paralogous relations between two genomes" I suggest paralogous relations (copies of genes at same genome, blue boxes).

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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.