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Old 11-13-2013, 03:19 PM   #2
gringer
David Eccles (gringer)
 
Location: Wellington, New Zealand

Join Date: May 2011
Posts: 838
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You can get this happening off the end of transcripts because the sequencer just sequences whatever it has available (if anything). For circularised DNA, this ends up being the index sequences that are attached to the ends of the reads. Have you done adapter clipping prior to mapping?
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