Additional file 2.

Nucleotide frequency logos showing the difference between raw and filtered nucleotide frequencies. Nucleotide frequency logos showing the raw frequencies (top) and the filtered and corrected frequencies (bottom). Both logos are provided to the user on the web interface to support the detected tag sequence. The tag sequence at the 3'-end can be identified more easily in the bottom logo and therefore allows more accurate predictions. (The lower value for nucleotide A at position 1 in the bottom logo shows that the majority of the sequences are shifted to the left by one position.)

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Schmieder et al. BMC Bioinformatics 2010 11:341   doi:10.1186/1471-2105-11-341