The introduction of genes into cultured cells and intact mammals.
D000818:Animals; D002478:Cells, Cultured; D002874:Chromosome Mapping; D004274:DNA, Recombinant; D005818:Genetic Engineering / Q000379:methods*; D006822:Hybrid Cells / Q000502:physiology; D008322:Mammals; D012641:Selection, Genetic
D004274:DNA, Recombinant