1. J. Sambrook, E. F. Fritsch, and T. Maniatis, in “Molecular Cloning: A Laboratory Manual,” 2nd Ed., Cold Spring Harbor Laboratory Press, Cold Spring Harbor, New York, 1989.
2. J. H. Miller, in “Experiments in Molecular Genetics,” Cold Spring Harbor Laboratory Press, Cold Spring Harbor, New York, 1972.
3. in press.