Immunological features differentiating naïve B cells activatedin primary immune responses from memory B cells functioning insecondary immune responses include the fact that [complete thesentence and assess each subsequent statement (1-7) as eitherfactually correct (true) or incorrect (false)]:
8. the frequency of antigen-specific B cells is lower insecondary immune responses.
9. higher levels of IgM are produced in secondary immuneresponses.
10. the level of somatic hypermutation is higher in secondaryimmune responses.
11. B cells do not require T-cell help in secondary immuneresponses.
12. memory B cells express higher levels of MHC class IImolecules.
13. naïve B cells express higher levels of co-stimulatorymolecules.
14. the antibody produced is of higher affinity in secondaryimmune responses.
