Fig. 2From: Transcriptional response to sulfide in the Echiuran Worm Urechis unicinctus by digital gene expression analysisCharacteristics of the homology search of illumina sequences against the Nr database. a E-value distribution of BLAST hits for each unique sequence with a cut-off E-value of 10−5. b Similarity distribution of the top BLAST hits for each sequence. c The species distribution is shown as a percentage of the total homologous sequences with an E-value of at least 10−5. We use the first hit of each sequence for analysisBack to article page