* This investigation was supported in part by U.S. Public Health Service research grant GM 12555, USPHS training grant TG 722, and National Science Foundation grant NSF GP 700. 1 Vinograd, J., J. Lebowitz, R. Radloff, R. Watson, and P. Laipis, these PROCEEDINGS, 53, 1104 (1965). 2 Crawford, L. V., and P. H. Black, Virology, 24, 388 (1964). 3 Jansz, H. S., and P. H. Pouwels, Biochem. Biophys. Re...
