Multiple choice

The secondary lymphoid system comprises of

  1. thymus and liver

  2. spleen, lymphocytes, tonsils and mucosal lymph tissue

  3. RBCs, WBCs and platelets

  4. all of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The secondary lymphoid system comprises of spleen, lymphocytes, tonsils and mucosal lymph tissue. 

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