title: Target practice in transgenics.
authors.forename: A
authors.initials: A
authors.lastname: Bradley
authors.forename: P
authors.initials: P
authors.lastname: Liu
mesh_terms: D000818:Animals; D018390:Gene Targeting / Q000379:methods*; D051379:Mice; D008822:Mice, Transgenic; D013234:Stem Cells; D019076:Transgenes / Q000235:genetics*