1. J. Virol.67: 7513-7521.
2. MANIATIS, T., E. F. FRITSCH and J. SAMBROOK (1982) Molecular Cloning; A Laboratory Manual. Cold Spring Harbor Laboratory, Cold Spring Harbor, New York, 545 pp.
3. MARUNIAK, J. E., S. E. BROWN and D. L. KNUDSON (1984) Virology 136: 221-234.
4. McCLINTOCK, J. T. and E. M. DOUGHERTY (1988) J. Gen. Virol. 69: 2303-2312.
5. MILLER, L. K. and K. P. DAWES (1979) J. Virol. 29: 1044-1045.