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30. Newly matured T and B cells that have been released to the periphery are called...

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Medical Sciences

30. Newly matured T and B cells that have been released to theperiphery are called “naïve”

What does that mean? (2pts)

31. What is the role of CD4+ T cells? What do they do? How do weknow they’re important? (2pts)

32. There are many different subtypes of CD4+ T cells. Whatdetermines what subtype they will become? (2pts)

33. What is the role of CD8+ T cells? What do they do?(2pts)

34. What is the role of T regulatory cells? How do we knowthey’re important? (2pts)

35. How are memory T cells different from effector T cells?(2pts)

36. Briefly describe the stages of building a BCR. (2pts)

37. Why do B cells only have to go through negative selection?(2pts)

38. What is the difference between a B-1 B cell and a B-2 Bcell? (2pts)

39. What is required during T-dependent B cell activation?(2pts)

40. What is required for T -independent activation to takeplace? (2pts)

41. What is somatic hypermutation? (2pts)

42. What is class-switch recombination? (2pts)

Answer & Explanation Solved by verified expert
4.4 Ratings (952 Votes)
30 Naive literally means without an experience The T and B cells are called naive cells because they have been recently matured from bone marrow and thymus and they are still not exposed to antigen and not functioning If a naive B cell gets exposed to antigen for first time then eventually it becomes memory cell or plasma cell which produce antibody same happens in case of T cells they are activated to helper cells or cytotoxic cells after the naive T cells gets exposed to antigen 31 CD4 t cells are also called helper T cells Their main role is activation of other T and B cells by releasing cytokines in the circulation Their normal range is 500 to 1500 cu mm when this count is low the person is prone to secondary bacterial viral and fungal    See Answer
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