Question

How long can memory cells remain in the lymph node?

Options

• Only a few days before dying

• Permanently, continuously producing antibodies

• Several weeks before being reactivated

• Many years without activity

Answer 1

Memory cells may remain in the lymph node without activity for many years. This extended dormancy allows them to serve as a long-term immune memory, enabling the immune system to mount a rapid response if the same antigen is encountered again in the future.