title: Knocking genes in instead of out.
authors.forename: J
authors.initials: J
authors.lastname: Marx
mesh_terms: D000818:Animals; D018390:Gene Targeting; D005801:Genes, Homeobox; D018398:Homeodomain Proteins / Q000235:genetics*; D051379:Mice; D018345:Mice, Knockout; D008822:Mice, Transgenic; D009419:Nerve Tissue Proteins / Q000235:genetics*; D000099266:Engrailed 2 Protein
chemical_list: D018398:Homeodomain Proteins; D009419:Nerve Tissue Proteins; D000099266:Engrailed 2 Protein; C080330:En1 protein, mouse