A) Huge numbers of white blood cells
B) Trapped viruses that have been roaming the body
C) Lymph ducts that enter and exit the nodes
D) All of the above
Correct Answer: D
Solution :
[d] White blood cells, lymph ducts, and lymph fluid are all structural or functional components of lymph nodes. The viruses will be there because the invaders get trapped in or transported to the nodes by lymphocytes and macrophages.
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