1.NounThe introduction of foreign genetic material (such as DNA or RNA) into a eukaryotic cell.
2.Noun↑ NIH — Mammalian cell transfection: the present and the futureTransfection is a powerful analytical tool for study of gene function and regulation and protein function. The introduced genetic materials (DNAs and RNAs) exist in cells either stably or transiently depending on the nature of the genetic materials [1].