[Isolation and study of a bacteriophage of Pseudomonas testosteroni]

A virulent phage specific for Pseudomonas testosteroni is described. This phage have a regular icosahedral head (52 nm between opposite angles) and a contractile tail (165 X 8 nm) but no fibers on. The buoyant density is 1,51 +/- 0,01 g/ml. The nucleic acid is an desoxyribonucleic acid with a density of 1,696 +/- 0,03 g/ml and a GC% between 33,7 and 39,7.