New and more effective search options are now available. For pages with nucleotide search sets (i.e., BLASTN and TBLASTN), Microbial BLAST now allows users to choose between "Representative genomes" and "All genomes". The Representative Genomes are the best representation of a genome, for a given organism, as selected by the research community and NCBI computational processes. For organisms that are represented many times in NCBI databases (e.g., E. coli), they provide a small representative set. The Representative Genomes are now the default nucleotide search sets. The "All genomes" option presents users with the choice of Complete genomes, Draft genomes, or Complete plasmids. The user may search these sets individually or in any combination. For microbial searches, the BLAST report has a new "Genome" link in the "Related Information" area of the alignments section that presents relevant information in Entrez Genome. An example is an entry for Shigella boydii.
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