Multiple choice

Serum is a clear liquid that can be separated from clotted blood. Specific antibodies are readily detectable in serum following primary contact with antigen after

  1. 10 min

  2. 1 h

  3. 5–7 days

  4. 3–5 weeks

  5. a second contact with antigen
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

5 days or more are required for B-cell proliferation, differentiation into plasma cells, and the secretion of a large enough amount of antibody for it to be readily detected systemically.

Keep practicing — related questions