Figure 1.
Diagram showing the isolation procedure of spontaneous host-range mutants of phage 812 represented by boxes. All phage mutants were isolated from a single plaque on selection S. aureus strains shown next to the corresponding mutants. Phage mutants were then propagated on S. aureus strains that are colour coded according to the phage mutant. The sequence type (ST) and the staphylococcal protein A (spa)-type of each strain are given in parentheses.