9 Questions
What type of immune response involves B cells recognizing antigens in the lymph or blood?
Humoral response
What stimulates B cells to proliferate and produce plasma cells?
Antigens and costimulators
What do plasma cells bear that have the identical antigen specificity as the antigen receptors of the activated B cells?
Antibodies
What do B cells produce to provide future immunity?
Memory cells
What type of immune response involves B cells recognizing antigens in the lymph or blood?
Humoral response
What stimulates B cells to proliferate and produce plasma cells?
Interleukins
What do B cells produce to provide future immunity?
Antibodies
What distinguishes the two groups of foreign substances that the immune system recognizes?
Type of MHC proteins displayed
Which immune response involves virus-infected and tumor cells actively synthesizing foreign proteins?
Cell-mediated response
Study Notes
Humoral Immune Response
- Involves B cells recognizing antigens in the lymph or blood
- B cells are activated when they recognize antigens through their surface-bound antigen receptors
Activation of B Cells
- Antigen recognition by B cells stimulates them to proliferate and produce plasma cells
- Cytokines, in particular IL-4 and IL-5, stimulate B cells to proliferate and differentiate into plasma cells
Plasma Cells
- Bear antigen receptors with identical specificity as the activated B cells
- Produce large amounts of antibody, which is released into the bloodstream
Immune Memory
- B cells produce antibodies to provide future immunity
- Memory B cells remain in the body, providing long-term immunity against specific antigens
Immune Recognition
- The immune system recognizes two groups of foreign substances: haptens, which require a carrier protein to stimulate an immune response, and immunogens, which can stimulate an immune response on their own
Cell-Mediated Immune Response
- Involves virus-infected and tumor cells actively synthesizing foreign proteins
- Recognized by T cells, which then activate other immune cells to eliminate the infected cells
Quiz: Immune Response to Foreign Invasion Test your knowledge of the humoral immune response with this quiz. Explore the role of B cells, antigens, interleukins, and helper T cells in fighting off foreign invaders.
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