[Morphology of the temperate plague phages 1701 and 1710 and their mutants].

A study was made of the morphology of plague moderate bacteriophages 1701, 1710 and their mutants 1701-1 and 1710-1. The phages proved to be morphologically identical, were referred to group 5, and were identical to the moderate plague H-phages; when confronted to the commonness of the serological properties and a number of other signs this indicated their affinity.