<?xml version="1.0" encoding="UTF-8"?><rss xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:atom="http://www.w3.org/2005/Atom" version="2.0"><channel><title><![CDATA[序列注释分析一例]]></title><description><![CDATA[<p dir="auto">某次测序结果中包括下面的序列  被分别注释为人类和疟原虫：<br />
AGTATACTTCGTTCAGTTACGTATTGCTAAGGTTAAAAGGTTACACAAACCCTGGTAAGCAGCACCCTTATTGTAACTCTTTCTCAGTAGTGATTTTACACTTCCAGGGTGCAATTTGCTGGTCGGTGTCATCTCCTGCAGGAGACAATGGGCTCCTTGAGGGCTGCGCGTCATGGTCACTGTTGAATCCCCACTGATCCCACCACGGAAGGGTGACTGAGTATTTGTTGAGTGAATAGTCAGGCCACTGAAGTTGGAGGCAGACGCCAGGTACCCCTCTGCCACCCTGTTCATAGGATTATTACTGAGGGAGAAATACAGGAGATGGCCAGGGGCAGGTCCCCACTCCCTCAGTAATAATCTTATGAACAGGTGGCAGGGGTGCCTGGCGTCTGCCTCCGACTTTGCTATCTGACTATTCACTCAACAAATATCAGCTCTCCCGTGTGGATCAGTGGGGCATTCAGCAGTGACCGGGGACAAGGCAGCCCCTCCAAGGAGCCCATTGTCTGCTGCAGGAGACAGACACTGACTCTGGAATTGCACCTGGAAGTGAAATCACTACTGGAGAAAGAGCTACAAATAAGGTGCTGCTTGTCCAGGGTTTGTGTAACCTTTTAACCTTAATAATACGTAGCA</p>
<p dir="auto">blast结果<br />
<img src="/assets/uploads/files/1616986642715-53a2c4fd-cd24-47ad-ac92-6361de96b313-image.png" alt="53a2c4fd-cd24-47ad-ac92-6361de96b313-image.png" class=" img-responsive img-markdown" /><br />
可以发现 该序列的某个部分（blast显示占查询序列的5%） 和疟原虫完全匹配：<br />
<img src="/assets/uploads/files/1616986719891-234c2ef4-0da2-4783-b92f-b4c153ab3842-image.png" alt="234c2ef4-0da2-4783-b92f-b4c153ab3842-image.png" class=" img-responsive img-markdown" /><br />
这个显然是假阳性  虽然blast的identity为100% 但是占比很低  这种最后肯定也是人的序列</p>
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