RT Journal Article SR Electronic(1) A1 Morgan, Teresa M. A1 Stanisich, Vilma A.YR 1976 T1 Characterization and Properties of Phage B33, a Female-specific Phage of Pseudomonas aeruginosa JF Journal of General Virology, VO 30 IS 1 SP 73 OP 79 DO https://doi.org/10.1099/0022-1317-30-1-73 PB Microbiology Society, SN 1465-2099, AB SUMMARY The morphology and physico-chemical properties of a temperate phage, B33, of Pseudomonas aeruginosa have been determined. This phage is similar in size and structure to the previously described and serologically related phage B3 (Holloway, Egan & Monk, 1960), but differs from it in its plating properties on bacteria harbouring R plasmids. The plasmid RP1-1 causes a reduction in e.o.p. of B33 of 10−6, and the mechanism whereby this occurs has been studied. The interaction is a specific one since other plasmids either fail to affect plating or completely abolish it. The mechanism by which the latter occurs is different from that mediated by RP1-1, since mutants of B33 insensitive to RP1-1 nevertheless fail to plaque on these hosts., UL https://www.microbiologyresearch.org/content/journal/jgv/10.1099/0022-1317-30-1-73