blast

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blast

 [blast]
1. an immature stage in cellular development before appearance of the definitive characteristics of the cell; used also as a word termination, as in ameloblast and trophoblast.
blast cell.
2. the wave of air pressure produced by the detonation of high-explosive bombs or shells or by other explosions; it causes pulmonary damage and hemorrhage (lung blast, blast chest), laceration of other thoracic and abdominal viscera, ruptured eardrums, and effects in the central nervous system.

blast

(blast),
General term for immature or precursor cell.
[G. blastos, germ]

BLAST

Basic Local Alignment Search Tool. A nucleic acid- and protein-sequence comparison algorithm which is used to find matches in gene sequences and to search sequence databases for optimal local alignments to a query sequence.

BLAST uses a heuristic algorithm, seeking local alignments and creating a matrix of similarity scores for all possible pairs of residues, defining high-scoring segments, statistically evaluating the significance of the results and detecting relationships among sequences which share only isolated regions of similarity.

blast

noun Hematology A general term for a primitive blood cell. See Blast cell, Blast crisis.

blast

(blast)
General term for immature or precursor cell.
[G. blastos, germ]

BLAST (Basic Local Alignment Search Tool)

a sequence comparison algorithm used to search DNA or PROTEIN databases. For example, BLASTN is used for homology searching to compare nucleotide sequences.

The query sequence is entered and compared with a nucleotide sequence database.

blast

(blast)
General term for immature or precursor cell.
[G. blastos, germ]
References in periodicals archive ?
But what really gets her steamed up is that "it's impossible to turn down the radiators which are on at full blast even in mild weather".
Lisa Lovatt, 35, was the first female to get an order in 2004 after playing and singing her Abba music at full blast in Derby.
Thomas and Mary Smith, aged 76 and 83, of Brow Road, Bidston, were taken to court last year for playing French radio at full blast, throwing eggs and glass bottles at their neighbour's property and constantly banging on the walls with a hammer.
The study found that music played at full blast could lead to a 20% reduction in the time it takes a driver to react to situations - a potentially fatal delay even in good weather and at moderate speeds, says the Foundation.
We're all looking for some respite, whether by hitting the beach, going up to Baguio, lounging by the pool, or even just collapsing on our beds with the fan at full blast. You may even have updated your wardrobe to consist of light, airy, and perhaps skin-baring pieces to keep from getting hot and bundled up.