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Biology: The Unity and Diversity o...
Biology: The Unity and Diversity o...
A dendritic cell engulfs a bacterium, then present bacterial bits on its surface along with a(n) _____.
- a. MHC marker
- b. antibody
- c. T cell receptor
- d. antigen
Concept introduction: Dendritic cells are considered as professional phagocytes like the macrophages and neutrophils. They are the specialized antigen-presenting cells that control the T-cell responses. They are also known as the accessory cells, and they act as a messenger between the innate and the adaptive immunity.
Reason for correct answer:
Dendritic cells have the ability to capture, process, and present the antigens to the T cells. The expression of the MHC class II on the surface of the antigen-presenting cells such as dendritic cells is regulated during the cellular activation. The dendritic cells are activated due to the stimulation of innate toll-like receptors by the product of microorganisms.
Option a. is given as “MHC marker”. As the MHC marker is present in the surface of the dendritic cell along with bacterial bits after the engulfment of the bacteria, option a. is correct.
Reasons for incorrect answer:
Option b. is given as “antibody”.
Antibody is produced by the B cells, and it is not present in the surface of the dendritic cells along with bacterial pits...
Chapter 37 Solutions
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