Which of the following statements best describes the purpose of neutralization reactions in detecting immunity to viruses?

Which of the following is NOT a step in the process of B cell activation as an APC?

The phenomena in which antibodies react with epitopes of bacterial cells, causing them to clump is called:

All of the following tests can detect the presence of antibodies except:

Tuberculin skin testing is commonly employed to identify Mycobacterium tuberculosis infection. If the result comes out positive 3 days after the injection, what specific parameter is being measured through this test?

Direct agglutination tests can be used to measure which of the following:

Which of the following may result in tissue transplantation rejection?