27. CD4 and CD8 are molecules present on the surface of T cells where they interact with major histocompatibility (MHC) molecules. Which of the staining pattern of lymphocytes in different lymphoid organs by FITC-anti-CD4 and PE-anti-CD8 antibodies is correct?
(A) Thymus 
(B) Spleen
(C) Bone marrow
(D) Tonsil
(E) Lymph node
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統計: A(24), B(1), C(2), D(0), E(3) #2993216
統計: A(24), B(1), C(2), D(0), E(3) #2993216