In the list given below,how many are secondar | vedclass

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(B) Lymphoid organs are classified into primary and secondary lymphoid organs.$1$. Primary lymphoid organs: These are the sites where lymphocytes orig

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$3$

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(B) Lymphoid organs are classified into primary and secondary lymphoid organs.$1$. Primary lymphoid organs: These are the sites where lymphocytes originate and/or mature. Examples include the Bone marrow and 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,Tonsils,Appendix,Peyer's patches,and Lymph nodes.From the given list:- Thymus: Primary lymphoid organ- Spleen: Secondary lymphoid organ- Bone marrow: Primary lymphoid organ- Tonsil: Secondary lymphoid organ- Appendix: Secondary lymphoid organTherefore,the secondary lymphoid organs are Spleen,Tonsil,and Appendix,which makes a total of $3$.

In the list given below,how many are secondary lymphoid organs?
Thymus,Spleen,Bone marrow,Tonsil,Appendix

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In the list given below,how many are secondary lymphoid organs?Thymus,Spleen,Bone marrow,Tonsil,Appendix