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.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

blast

(blast),
General term for immature or precursor cell.
[G. blastos, germ]
Farlex Partner Medical Dictionary © Farlex 2012

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.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

blast

noun Hematology A general term for a primitive blood cell. See Blast cell, Blast crisis.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.

blast

(blast)
General term for immature or precursor cell.
[G. blastos, germ]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

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.

Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005

blast

(blast)
General term for immature or precursor cell.
[G. blastos, germ]
Medical Dictionary for the Dental Professions © Farlex 2012
References in periodicals archive ?
3) was constructed from the nucleotide sequences retrieved through BLAST (Basic Local Alignment Search Tool).
(10); S-PCR, single serotype-specific primer PCR; D, dengue serotype; BLAST, basic local alignment search tool; NS, not sequenced.
(1990) "Basic local alignment search tool", Journal of Molecular Biology, Vol.
These data were compared with those in databases by using the basic local alignment search tool for nucleotides (blastn), with default settings (7).
The most widely used of these is the Basic Local Alignment Search Tool (BLAST[R]) software, available from the NCBI.

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