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<span style="WIDOWS: 2; TEXT-TRANSFORM: none; TEXT-INDENT: 0px; BORDER-COLLAPSE: separate; FONT: 16px 'Times New Roman'; WHITE-SPACE: normal; ORPHANS: 2; LETTER-SPACING: normal; COLOR: rgb(0,0,0); WORD-SPACING: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px" class="Apple-style-span"><span style="FONT-FAMILY: Verdana; FONT-SIZE: 14px" class="Apple-style-span"><dt style="BORDER-BOTTOM: rgb(136,136,136) 1px; BORDER-LEFT: rgb(136,136,136) 1px; PADDING-BOTTOM: 0px; BACKGROUND-COLOR: rgb(238,238,238); PADDING-LEFT: 0px; PADDING-RIGHT: 0px; BORDER-TOP: rgb(51,102,153) 1px solid; BORDER-RIGHT: rgb(136,136,136) 1px; PADDING-TOP: 0px" class="head"><div style="TEXT-ALIGN: right; MIN-HEIGHT: 1.5em; VERTICAL-ALIGN: top" class="abstitle"><span style="MARGIN-TOP: 0.25em; FLOAT: left; MARGIN-LEFT: 0.25em; FONT-SIZE: 12px; VERTICAL-ALIGN: top" class="ti"><span style="VERTICAL-ALIGN: top" title="Genome research."><a style="VERTICAL-ALIGN: top" href="javascript:AL_get(this, 'jour', 'Genome Res.');featured_linkouts"><font color="#0066cc">Genome Res.</font></a></span><span class="Apple-converted-space">&nbsp;</span>2009 Jul 27. [Epub ahead of print[Genome Research journal]]</span><span style="VERTICAL-ALIGN: top" class="featured_linkouts"><a style="VERTICAL-ALIGN: top" href="http://genomics.org/entrez/utils/fref.fcgi?PrId=3051&amp;itool=AbstractPlus-def&amp;uid=19635845&amp;db=pubmed&amp;url=http://www.genome.org/cgi/pmidlookup?view=long&amp;pmid=19635845" target="_blank"></a><span class="Apple-converted-space">&nbsp;</span></span><span style="VERTICAL-ALIGN: top" class="linkbar"><a style="FONT-FAMILY: arial, helvetica, sans-serif; COLOR: rgb(51,102,153); FONT-SIZE: 14px; VERTICAL-ALIGN: top; TEXT-DECORATION: none" class="dblinks" onmouseout="PopUpMenu2_Hide();" href="javascript:PopUpMenu2_Set(Menu19635845);" target="_self"><font color="#336699">Links</font></a></span></div></dt><dd style="Z-INDEX: 2; OVERFLOW-X: visible; OVERFLOW-Y: visible; WIDTH: 686px; PADDING-RIGHT: 0.75em; ZOOM: 1; FLOAT: left; MARGIN-LEFT: 0.5em; CLEAR: left" class="abstract">