Affiliation:
1. Biology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830
Abstract
The phages HP1
c
1 and S2 and a defective phage of
Haemophilus influenzae
have been compared. The morphology of the phages and the mol wt of their DNAs are similar, although the defective phage appears to have a different tail plate region. Electron microscope observation indicates that the defective phage does not attach to the cell surface, and its DNA appears to lack cohesive ends. The homology of the DNAs of the phages has been measured by hydridization. DNA from the defective phage shows little or no homology with the other phage DNAs. HP1
c
1 and S2 DNAs show a high level of homology. Each of these phages can form plaques on lawns of the lysogen of the other phage but at reduced plating efficiencies, suggesting that the two phages have related but not identical immunity systems.
Publisher
American Society for Microbiology
Subject
Virology,Insect Science,Immunology,Microbiology
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