1. BARSKI, G., CORNEFERT, F., and WALLACE, R. E. (1959) Proc. Soc. exp. Biol. (N.Y.), 100, 407
2. CARNEY, F. E., Jr., and TAYLOR-ROBINSON, D. (1973)
3. CASAL, J., RUBENSTEIN, D., VOTAVA, M., and TYRRELL, D. A. J. (1970) Arch. Virusforsch., 31, 196
4. Infect;CHERRY, J.D.; TAYLOR-ROBINSON, D.;and Immun,1970
5. Brit. J7. vener;CLYDE, Jr, W.A.;Immunol; Obstet,1964