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                <p>BERLIN (AFP) – The 'B' sample of blood collected during a race in February from banned German cyclist Patrik Sinkewitz has tested positive for the growth hormone.</p>
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Sinkewitz said on his own website that he was innocent and "ready to prove it".</p>
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Growth hormone showed up in tests of a blood sample taken from Sinkewitz at the GP di Lugano on February 27, leading to a provisional ban by the International Cycling Union.</p>
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Sinkewitz had already been banned for a year after he tested positive for testosterone on June 8, 2007.</p>
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A former Tour of Germany winner, Sinkewitz was sacked by his team T-Mobile during the 2007 Tour after the failed test and he later admitted using blood-booster erythropoietin (EPO) and having undergone blood transfusions.</p>
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            </p></div></div><p><strong>Read more:</strong> <a class="rssreadon" rel="external" title="Sinkewitz 'B' sample tests positive for doping   (AFP)" href="http://us.rd.yahoo.com/dailynews/rss/sports/*http%3A//news.yahoo.com/s/afp/20110407/sp_wl_afp/cyclinggersinkewitzdoping" target="_blank">http://us.rd.yahoo.com/dailynews/rss/sports/*http%3A//news.yahoo.com/s/afp/20110407/sp_wl_afp/cyclinggersinkewitzdoping</a></p>