title: PID, a new member of the P1 bacteriophage group.
abstract: Phage P1D produces particles of essentially uniform head size and differs from P1 in its range and tail length. The dimensions of phage P1 are reassessed. The P1 phage group shows signs of morphological evolution.
authors.affiliation: Félix d' Hérelle Reference Center for Bacterial Viruses, Department of Microbiology, Faculty of Medicine, Laval University, Quebec, Canada.
authors.forename: H W
authors.initials: HW
authors.lastname: Ackermann
authors.forename: A
authors.initials: A
authors.lastname: Reynaud
authors.forename: M C
authors.initials: MC
authors.lastname: Gayerie
mesh_terms: D017101:Bacteriophage P1 / Q000254:growth & development / Q000648:ultrastructure*; D005075:Biological Evolution; D004926:Escherichia coli; D013045:Species Specificity