re striction enzyme

restriction enzyme

noun Biochemistry.
any of a group of enzymes that catalyze the cleavage of DNA molecules at specific sites: used for gene splicing in recombinant DNA technology and for chromosome mapping.

Origin:
1960–65

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Collins
World English Dictionary
restriction enzyme
 
n
any of several enzymes produced by bacteria as a defence against viral infection and commonly used to cut DNA for genetic manipulation or diagnosis

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

restriction enzyme re·stric·tion enzyme (rĭ-strĭk'shən)
n.
Any of a group of enzymes that cleave DNA at specific sites to produce discrete fragments, used especially in gene-splicing. Also called restriction endonuclease.

The American Heritage® Stedman's Medical Dictionary
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