| phage 21 | escherichia coli | | Escherichia coli strain E3406 | 2618967 |
| phage 21 | escherichia coli | | Escherichia coli strain EC47 | 2618964 |
| phage 21 | escherichia coli | | Escherichia coli strain EC40 | 2618961 |
| phage 21 | escherichia coli | | Escherichia coli strain EC38 | 2618958 |
| phage 21 | escherichia coli | | Escherichia coli strain EC53 | 2618955 |
| phage 21 | escherichia coli | | Escherichia coli strain EC52 | 2618952 |
| phage 21 | escherichia coli | | Escherichia coli strain E851819 | 2618949 |
| phage 21 | escherichia coli | | Escherichia coli strain EC67 | 2618946 |
| phage 21 | escherichia coli | | Escherichia coli strain EC20 | 2618943 |