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| Symbol: Pu; atomic weight: 242; atomic number: 94 |
| Symbol: In; atomic weight: 114.82; atomic number: 49 |
| 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 | |
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.