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An Affixing Machine is a machine that affixes postage stamps to an envelope, postcard or wrapper. [1] Affixing machines first appeared in the 1850s [2] but were not widely used until the early 20th century. [3] Stamp affixing machines were brought about by the need to mechanically affix stamps for bulk processing of mail. [4]
A BLAST variant called MegaBLAST indexes 4 databases to speed up alignments. [ 9 ] BLAT can extend on multiple perfect and near-perfect matches (default is 2 perfect matches of length 11 for nucleotide searches and 3 perfect matches of length 4 for protein searches), while BLAST extends only when one or two matches occur close together.
In bioinformatics, BLAST (basic local alignment search tool) [3] is an algorithm and program for comparing primary biological sequence information, ...
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In cell biology, precursor cells—also called blast cells—are partially differentiated, or intermediate, and are sometimes referred to as progenitor cells. A precursor cell is a stem cell with the capacity to differentiate into only one cell type, meaning they are unipotent stem cells .
(Reuters) - The U.S. Food and Drug Administration on Wednesday approved Mesoblast's cell therapy for treating a type of complication that occurs after a stem cell or bone marrow transplant called ...