Which of the following are secondary lymphoid | vedclass

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(A) Lymphoid organs are classified into two types: primary and secondary lymphoid organs.$(1)$ Primary lymphoid organs: These are the sites where lymp

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$(b)$ and $(c)$ only

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(A) Lymphoid organs are classified into two types: primary and secondary lymphoid organs.$(1)$ Primary lymphoid organs: These are the sites where lymphocytes originate and/or mature and become antigen-sensitive. Examples include the bone marrow and the thymus.$(2)$ Secondary lymphoid organs: These are the sites where lymphocytes interact with the antigen and then proliferate to become effector cells. Examples include the spleen, lymph nodes, tonsils, Peyer's patches of the small intestine, and the appendix.Therefore, among the given options, $(b)$ Tonsils and $(c)$ Spleen are secondary lymphoid organs.

Which of the following are secondary lymphoid organs?
$(a)$ Bone marrow
$(b)$ Tonsils
$(c)$ Spleen
$(d)$ Thymus
Choose the correct answer from the options given below:

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Which of the following are secondary lymphoid organs?$(a)$ Bone marrow$(b)$ Tonsils$(c)$ Spleen$(d)$ ThymusChoose the correct answer from the options given below: