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Hello students.
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Now in this question they are asking regarding the secondary lymphoid.
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Now if we see with respect to secondary lymphoid or the lymphoid tissue rather, we will observe that in case of the lymphoid system or the lymphoid tissue, we will see two kinds.
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One is the primary lymphoid system, right? and the second one is the secondary lymphoid system which they have asked about today.
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So in this case, let us see first what primary system involves, right? so the primary system, if you observe, it involves none other than the bone marrow.
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Now what is bone marrow helping with? if you see, in case of bone marrow, you're helping that, you're seeing that rather that it helps with the formation of the blood and it helps with the formation of the immune cells, right? the production of the blood and the immune cells occurs in the bone marrow.
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What is the other primary lymphoid organ that you can see? it is the thymus.
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Now what do you observe in case of thymus? it helps in the t cell maturation, right? so the t cells will mature at this particular organ that is the thymus...