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J Bacteriol. 1965 September; 90(3): 796-802
Copyright © 1965 American Society for Microbiology. All Rights Reserved.

Multiple-Tailed T4 Bacteriophage

Department of Virology and Epidemiology, Baylor University College of Medicine, Houston, Texas

ABSTRACT

SMITH, KENDALL O. (Baylor University College of Medicine, Houston, Tex.), and MELVIN TROUSDALE. Multiple-tailed T4 bacteriophage. J. Bacteriol. 90:796–802. 1965.—T4 phage particles which appeared to have multiple-tails were observed. Experiments were designed to minimize the possibility that superimposed particles might account for this appearance. Double-tailed particles occurred at a frequency as high as 10%. Triple- and quadruple-tailed particles were extremely rare. All attempts to isolate pure lines of multiple-tailed phage have failed. Multiple-tailed phage particles were produced in highest frequency by Escherichia coli cells in the logarithmic growth phase which had been inoculated at a multiplicity of about 2.