In the germinal center, what happens to centrocytes that bind antigen with a high-affinity receptor?

Which statement is INCORRECT regarding the gut mucosal immune system?

___________ is when a subpopulation of unvaccinated individuals is protected against a pathogen because most individuals in the overall population are vaccinated.

An individual with an antibody deficiency typically shows increased susceptibility to ________.

The following signals are required for T-cell activation and proliferation in secondary lymphoid tissues EXCEPT:

To stimulate a protective immune response to COVID-19, the COVID vaccines currently approved in the US all contain ___________.

Which cell type presents antigen to B-cells in the lymphoid follicles?

What was first used in the Smallpox vaccine produced by Edward Jenner?

Which of the following statements describes thymus independent antigen responses?

What happens if a B-cell does not meet its conjugate T-cell at the boundary region?