Soru
Proliferation of T-cells in response to antigen presentation is accompanied by enlargement of __ a. lymph nodes b. Thymus c. size of antibody d. size of B-cell
Çözüm
3.4
(269 Oylar)
Necip
Elit · 8 yıl öğretmeni
Uzman doğrulaması
Cevap
The correct answer is a. lymph nodes.When T-cells proliferate in response to antigen presentation, it is accompanied by the enlargement of lymph nodes. Lymph nodes are small, bean-shaped structures that are part of the lymphatic system. They play a crucial role in the immune response by filtering lymph fluid and housing immune cells, including T-cells.When an antigen (a foreign substance) enters the body, it is captured by dendritic cells and presented to T-cells in the lymph nodes. This triggers the activation and proliferation of T-cells, which helps to mount an immune response against the antigen. As a result, the lymph nodes enlarge to accommodate the increased number of T-cells and other immune cells that are involved in the immune response.Option b, the thymus, is not the correct answer. The thymus is an organ where T-cells mature, but it does not enlarge in response to antigen presentation.Option c, the size of antibody, is not the correct answer. The size of an antibody molecule does not change in response to antigen presentation.Option d, the size of B-cell, is not the correct answer. B-cells are a different type of immune cell that produce antibodies, but their size does not change in response to antigen presentation.