https://bioinformaticsonline.com/videolist/watch/2791/ncbi-psi-blast-tutorial? https://bioinformaticsonline.com/videolist/watch/2791/ncbi-psi-blast-tutorial Fri, 23 Aug 2013 02:25:02 -0500 https://bioinformaticsonline.com/videolist/watch/2791/ncbi-psi-blast-tutorial http:--www.biotechnology.jhu.edu- Tutorial for PSI-BLAST, an extension of BLAST that uses matrix algebra. BLAST is a cornerstone bioinformatics tool at NCBI. BLAST is the Basic Local Alignment Search tool and will protein and DNA sequences that are related to a sequence that the user provides.]]>