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Multiple Choice

Which of the following is NOT an example of MALT?

MALT refers to immune tissue that sits right in mucosal linings and helps defend the body at sites like the gut and airways. Classic examples are Peyer’s patches in the small intestine, the appendix, and tonsils. The thymus, by contrast, is a primary lymphoid organ where T cells mature. It isn’t located in a mucosal surface and doesn’t form the mucosa-associated lymphoid structures that coordinate immune responses at mucosal sites. So the thymus is not an example of MALT.

MALT refers to immune tissue that sits right in mucosal linings and helps defend the body at sites like the gut and airways. Classic examples are Peyer’s patches in the small intestine, the appendix, and tonsils. The thymus, by contrast, is a primary lymphoid organ where T cells mature. It isn’t located in a mucosal surface and doesn’t form the mucosa-associated lymphoid structures that coordinate immune responses at mucosal sites. So the thymus is not an example of MALT.