21.Which of the following statements are TRUE about yo T cells and B-1 B cells?

Question

21.Which of the following statements are TRUE about yo T cells and B-1 B cells? A. Both can self-renew in the periphery and do not need to be replenished from primary lymphoid tissues. B. Both have identical lymphocyte receptors to one another. C. Both respond to their antigens via high-affinity receptor responses. D. Both A and C E. All of the above 22.What are two functions of bone marrow stromal cells with respect to B- cell development? A. Cytokine expression and directs developing B cells to a specific location B. Recruits macrophages to phagocytize self-recognizing B cells and decreases HSC when no active infection is present C. Secretes release factors that direct the B cell to the spleen and expresses necessary cytokines D. Directs developing B cells to a specific location and recruits red bloods to bring oxygen to developing B cells E. Triggers HSCs to produce more pro-B cells and secretes cytokines to stimulate osteoblast development 23. What are the possibilities of what can occur if the BCR on a B cell

Explanation / Answer

Answers -

21- option A

Explanation - in the given cells high affinity response is generally not seen.

22 - option A

Explanation - B cell in bone marrow stromal cell lead to cytokines & they are responsible for developing the B cells in specific locations like peripheri.

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