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<div id="fbtb-1062176875431450657" itemid="http://www.freebase.com/id/en/rous_sarcoma_virus" itemscope="" itemtype="http://www.freebase.com/id/biology/organism_classification"><div class="fbtb-frame"><div class="fbtb-title"><a href="http://www.freebase.com/url?c=w&id=/en/rous_sarcoma_virus&mode=i&url=http://www.freebase.com/view/en/rous_sarcoma_virus&wid=topicblocks&wurl=http://www.freebase.com/widget/topic%3Fid%3D/en/rous_sarcoma_virus%26mode%3Di%26panes%3Dimage,article_props" target="_top">Rous sarcoma virus</a></div><div class="fbtb-content"><div class="fbtb-pane fbtb-image-pane "><a href="http://www.freebase.com/url?c=w&id=/en/rous_sarcoma_virus&mode=i&url=http://www.freebase.com/view/en/rous_sarcoma_virus&wid=topicblocks&wurl=http://www.freebase.com/widget/topic%3Fid%3D/en/rous_sarcoma_virus%26mode%3Di%26panes%3Dimage,article_props" target="_top"><img class="fbtb-img-150" height="150" src="http://img.freebase.com/api/trans/image_thumb/en/rous_sarcoma_virus?pad=1&errorid=%2Ffreebase%2Fno_image_png&maxheight=150&mode=fillcropmid&maxwidth=150" title="Rous sarcoma virus" width="150"></img></a></div><div class="fbtb-pane fbtb-info-pane fbtb-pane-last"><div class="fbtb-description">Rous sarcoma virus is a retrovirus and is the first oncovirus to have been described: it causes sarcoma in chickens.As with all...<a class="fbtb-more" href="http://www.freebase.com/url?c=w&id=/en/rous_sarcoma_virus&mode=i&url=http://en.wikipedia.org/wiki/index.html%3Fcurid%3D4334732&wid=topicblocks&wurl=http://www.freebase.com/widget/topic%3Fid%3D/en/rous_sarcoma_virus%26mode%3Di%26panes%3Dimage,article_props" target="_top"> more</a></div><div class="fbtb-properties"><div class="fbtb-property"><span class="fbtb-label">Scientific name: </span>Rous sarcoma virus</div><div class="fbtb-property"><span class="fbtb-label">Rank: </span><a class="pv" href="http://www.freebase.com/url?c=w&id=/en/rous_sarcoma_virus&mode=i&url=http://www.freebase.com/view/en/species&wid=topicblocks&wurl=http://www.freebase.com/widget/topic%3Fid%3D/en/rous_sarcoma_virus%26mode%3Di%26panes%3Dimage,article_props" target="_top" title="Species">Species</a></div></div></div></div><div class="fbtb-get"><a href="http://www.freebase.com/url?c=w&id=/en/rous_sarcoma_virus&mode=i&url=http://www.freebase.com/topicblocks%3Fid%3D/en/rous_sarcoma_virus%26mode%3Di%26panes%3Dimage,article_props%26utm_campaign%3Dtopicblocks%26utm_medium%3Dwww%26utm_source%3Dtopicblocks_getone&wid=topicblocks&wurl=http://www.freebase.com/widget/topic%3Fid%3D/en/rous_sarcoma_virus%26mode%3Di%26panes%3Dimage,article_props" target="_top">Get one for any topic!</a></div></div></div><style type="text/css">#fbtb-1062176875431450657{position:relative;color:#666}#fbtb-1062176875431450657 * div, #fbtb-1062176875431450657 * img{text-align:left;vertical-align:baseline;font-family:"Helvetica Neue", 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