Adaptive immunity is sometimes also called acquired immunity. Which of the following statements provides a basis for the alternative name?
◦ To become activated, lymphocytes require exposure to the epitope for which they are specific.
◦ Activated lymphocytes produce daughter cells that are identical in specificity and function.
◦ Lymphocytes reactive to normal body components are removed.
◦ Activated lymphocytes may persist for years in the body.
◦ Lymphocytes of the adaptive immune system are highly specific for a single epitope.