noun Biotechnology.
the insertion into a cell of a bacterial plasmid that contains a foreign virus or genetic material.

1964; trans- + (in)fection Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
transfection (trænsˈfɛkʃən)
the transfer into another cell of genetic material isolated from a cell or virus

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

transfection trans·fec·tion (trāns-fěk'shən)
Infection of a bacterium or cell with DNA or RNA isolated from a bacteriophage or from an animal or a plant virus, resulting in replication of the complete virus.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Encyclopedia Britannica


a term sometimes used for an infection initiated by using only the nucleic acid of a virus, not the intact viral particle. It is a useful microbiological technique. Under certain experimental conditions, transfection can be accomplished successfully because the process requires only the genetic information contained in the viral genome (its full complement of genes), which is in the nucleic acid. The viral proteins are not necessary, because in many cases the protein serves no function other than to protect the virus as it is transported from one intracellular environment to another.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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