g mem A through B wil be used more than once.) A. Delayed hypersensitivity B. Im
ID: 282391 • Letter: G
Question
g mem A through B wil be used more than once.) A. Delayed hypersensitivity B. Immediate hypersensitivity C. Both A and B D. Neither A nor B 1. B lymphocytes are involved 2. IgE antibodies are involved 3. Contact dermatitis, such as to poison ivy 4. Occurs within a period of 1 to 3 days 5. Fibroblasts are involved 6. T lymphocytes are involved 7. Therapy - corticosteroids, such as cortisone 8. Allergic reactions, hay fever and asthma 9. Therapy - antihistamines and adrenergic drugs 10. An example of passive immunity 11. The antigens are called allergensExplanation / Answer
1. Both A and B (although more Immediate than Delayed): B lymphocytes are involved. During an immediate hypersensitivity, CD4+Th2 cells stimulate B-cells to produce IgE antibodies. During a delayed hypersensitivity, B-cells are working as antigen-presenting cells and they activate Th1 cells.
2. Immediate hypersensitivity: IgE antibodies are involved.
3. Delayed hypersensitivity: Contact dermatitis, such as to poison ivy
4. Delayed hypersensitivity: Occurs within a period of 1 to 3 days (24-72 hours)
5. Neither A nor B. Fibroblasts are involved. (Fibroblasts are not immune cells)
6. Both A and B (although more A than B). T lymphocytes are involved. During an immediate hypersensitivity, CD4+Th2 cells stimulate B-cells to produce IgE antibodies. During a delayed hypersensitivity, B-cells are working as antigen-presenting cells and they activate Th1 cells.
7. Neither A nor B. Therapy - corticosteroids, such as cortisone. Corticosteroids are not a therapy but actually, they themselves can cause hypersensitivity.
8. Immediate hypersensitivity. Allergic reactions, hay fever, and asthma.
9. Immediate hypersensitivity. Therapy - antihistamines and adrenergic drugs
10. Neither A nor B. An example of passive immunity
11. Immediate hypersensitivity. The antigens are called allergens
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.