The immune response is a biological reaction that protects against tissue damage, toxicity, and tumors. It involves a diverse array of immune cell populations that migrate to lymphoid or nonlymphoid tissues. Cell-mediated immune responses involve the destruction of infected cells by cytotoxic T cells, or the destruction of intracellular pathogens by macrophages. The adaptive immune response in B cells, Helper T cells, and Cytotoxic T cells involves four phases: Encounter, Activation, Attack, Memory. The adaptive immune system is activated when pathogens are able to bypass innate immune... Show more The immune response is a biological reaction that protects against tissue damage, toxicity, and tumors. It involves a diverse array of immune cell populations that migrate to lymphoid or nonlymphoid tissues. Cell-mediated immune responses involve the destruction of infected cells by cytotoxic T cells, or the destruction of intracellular pathogens by macrophages. The adaptive immune response in B cells, Helper T cells, and Cytotoxic T cells involves four phases: Encounter, Activation, Attack, Memory. The adaptive immune system is activated when pathogens are able to bypass innate immune defenses. Humans have three types of immunity: Innate immunity: A type of general protection that everyone is born with. Innate immunity depends on physical and chemical barriers that work on all pathogens. The skin acts as a barrier to block germs from entering the body. Adaptive immunity: The creation of immunological memory after an initial response to a specific pathogen. This process of acquired immunity is the basis of vaccination. Passive immunity: A third type of immunity. Clonal selection theory is a scientific theory in immunology that explains how immune system cells respond to antigens that invade the body. The theory proposes that antigens select lymphocytes from a population of cells that are precommitted to produce specific antibodies. The theory also states that antibody-forming cells are monospecific and express cell-surface receptors that can bind foreign antigens. T-lymphocytes, also known as T-cells, are a type of white blood cell that play a vital role in the immune system. The immune system fights harmful cells, such as cancer cells, and infection-causing pathogens like viruses, bacteria, fungi, and parasites. Antigens (Ag) are agents (microorganisms, particles, cells, or molecules) that can trigger the immune response. Small portions of the antigen (antigenic determinants or epitopes), recognized as foreign by the immune system, are responsible for the immune reaction. Topics include: Immune Response, Clonal Selection Theory, T-lymphocytes, & Immunity Molecular Basics. Related: Cell Biology Practice Test: Cancer Show less
The immune response is a biological reaction that protects against tissue damage, toxicity, and tumors. It involves a diverse array of immune cell populations that migrate to lymphoid or nonlymphoid tissues.
Cell-mediated immune responses involve the destruction of infected cells by cytotoxic T cells, or the destruction of intracellular pathogens by macrophages.
The adaptive immune response in B cells, Helper T cells, and Cytotoxic T cells involves four phases: Encounter, Activation, Attack, Memory.
The adaptive immune system is activated when pathogens are able to bypass innate immune defenses.
Humans have three types of immunity: Innate immunity: A type of general protection that everyone is born with. Innate immunity depends on physical and chemical barriers that work on all pathogens. The skin acts as a barrier to block germs from entering the body. Adaptive immunity: The creation of immunological memory after an initial response to a specific pathogen. This process of acquired immunity is the basis of vaccination. Passive immunity: A third type of immunity.
Clonal selection theory is a scientific theory in immunology that explains how immune system cells respond to antigens that invade the body. The theory proposes that antigens select lymphocytes from a population of cells that are precommitted to produce specific antibodies. The theory also states that antibody-forming cells are monospecific and express cell-surface receptors that can bind foreign antigens.
T-lymphocytes, also known as T-cells, are a type of white blood cell that play a vital role in the immune system. The immune system fights harmful cells, such as cancer cells, and infection-causing pathogens like viruses, bacteria, fungi, and parasites.
Antigens (Ag) are agents (microorganisms, particles, cells, or molecules) that can trigger the immune response. Small portions of the antigen (antigenic determinants or epitopes), recognized as foreign by the immune system, are responsible for the immune reaction.
Topics include: Immune Response, Clonal Selection Theory, T-lymphocytes, & Immunity Molecular Basics.
Related: Cell Biology Practice Test: Cancer
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