title: Gene transfer moves ahead.
mesh_terms: D000818:Animals; D004274:DNA, Recombinant; D005786:Gene Expression Regulation; D005818:Genetic Engineering / Q000379:methods*; D005822:Genetic Vectors; D007041:Hypoxanthine Phosphoribosyltransferase / Q000235:genetics; D012641:Selection, Genetic; D013937:Thymidine Kinase / Q000235:genetics; D014170:Transformation, Genetic
chemical_list: D004274:DNA, Recombinant; D007041:Hypoxanthine Phosphoribosyltransferase; D013937:Thymidine Kinase