Which factors on the surfaces of B cells and T cells, through their interaction, are required to allow germinal center formation to occur?
A. CD40 and CD40L
B. Fas and FasL
C. CD28 and CD80/86
D. TCR and MHC class II
E. None of the above
A
Health & Biomechanics
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Immature B cells develop into B cells in the
a. subendosteum b. bone marrow c. thymus d. blood e. secondary lymphoid organs.
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Surgical puncture of the amnion
What will be an ideal response?
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Which of the following is currently America's number one cause of death?
A. accidents B. cancer C. heart disease D. suicide
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Which of the following symptoms relates to anorexia nervosa according to the American Psychiatric Association?
A. Persistent overconcern with body shape and size B. Fear of being fat when at or below normal weight C. Regular self-induced vomiting or use of laxatives or diuretics to prevent weight gain D. Recurrent episodes of binge eating
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