Table 1 Wild type and mutant pneumococcal strains used
Strain | Serotype | Origin/comment |
|---|---|---|
307.14 encapsulated | 18C | Nasopharyngeal isolate |
307.14 nonencapsulated | nonencapsulated | Nasopharyngeal isolate |
307.14Δcps:: Janus | nonencapsulated | Laboratory mutant: strain 307.14 encapsulated which has had its capsule operon replaced by a Janus cassette |
307.14 cap+ | 18C | Capsule switch mutant: 307.14 nonencapsulated which has had its capsule operon replaced by that of 307.14 encapsulated |
307.14 cap- | nonencapsulated | Capsule switch mutant: 307.14 encapsulated which has had its capsule operon replaced by that of 307.14 nonencapsulated |