Fig. 1.

Electron micrographs of negatively stained Erwinia amylovora phages. Phages were classified into the Podoviridae (L1, S2, S6, and S7) and Myoviridae (Y2, M7, Y1, and S10) families. From the latter, virions with both contracted and uncontracted tails are shown. Letters A to H indicate phage subtypes. Scale bars represent 100 nm.