Which of the following is the correct pair of primary lymphoid and secondary lymphoid organs:
a) Bone marrow, Lymph nodes
b) Thymus, spleen
c) Tonsil, Mucosa
1
Only a
2
Only b
3
Both a and b
4
Only c
Which of the following is the correct pair of primary lymphoid and secondary lymphoid organs:
a) Bone marrow, Lymph nodes
b) Thymus, spleen
c) Tonsil, Mucosa