transformation defined in 1951 yeartransformation - transformation;
transformation - (1) Phenomenon in which certain bacteria, when grown in the presence of killed cells, culture filtrates or extracts from other, related strains, acquire some of the genetic characters of these strains (i.e. they are transformed). Transforming principle is DNA. (2) Inherited change produced in cultured animal cells by infection with certain viruses, or by action of other agents, usually involving ability to form tumours.
near transformation in Knolik
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