title: Preparing transgenic animals with a simplified method of morula aggregation using es cells.
abstract: The authors describe an ES cell technique that resolves the problems of time, expense, and inconsistency often encountered in the production of transgenic mice via DNA microinjection.
authors.affiliation: The Wistar Institute, 3601 Spruce St., Philadelphia, PA 19104.
authors.forename: W
authors.initials: W
authors.lastname: Kong
authors.forename: P U
authors.initials: PU
authors.lastname: Rani
authors.forename: Y
authors.initials: Y
authors.lastname: Bao
authors.forename: J S
authors.initials: JS
authors.lastname: Khillan