RESISTANCE TO ULTRAVIOLET LIGHT AS AN INDEX TO THE REPRODUCTION OF BACTERIOPHAGE

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Abstract
The growth of bacteriophages T2r and T7 within cells of their host, Escherichia coli strain B, were analyzed, using the method of Luria and Latarjet, which depends upon measurements of resistance to u.-v. Phage T7 gives results similar to expectations from target theory, while the results with T2r confirm the anomalous behavior observed by Luria and Latarjet, indicating that there may be large differences in the modes of reproduction of different phages. The utility of the change in resistance as a tool in studying bacteriophage development and certain problems in bacterial physiology is pointed out.