asked 62.8k views
4 votes
Which of the following are primary lymphoid organs?

a.bone marrow and thymus
b.appendix and spleen
c.lymph nodes and tonsils
d.spleen and thymus

1 Answer

4 votes

Answer:

a.bone marrow and thymus

answered
User Ruslan Zinovyev
by
8.6k points
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