Q: Cellular Immunity Theory indicates that:
A: Host cells ares the primary mediators of immunity.

Q: Humoral Theory indicates that:
A: Molecules found in circulating blood and body fluids mediate immunity.

Q: What are isoantibodies?
A: Antibodies in an individual to antigens in another, genetically nonidentical, member of the same species.

Q: Name 3 characteristics of Natural immunity
A: It is present prior to exposure, it is not enhanced by exposure, it is nonspecific.

Q: What are the components of natural immunity?
A: Phoagocytic cells, NK cells, complement, cytokines, pattern recognition receptors.

Q: What are the characteristics of specific immunity?
A: Induced by antigens, memory induced, directs natural immunity to site of invasion, mediated by lymphocytes and their secreted products.

Q: What are the 4 types of specific immunity?
A: Active, Passive, Humoral, Cell mediated.

Q: Describe active immunity and give an example.
A: Exposure to foreign antigen actively stimulates the host’s own cell to respond; Vaccination.

Q: Describe passive immunity and give an example.
A: Transfer of antibody or cells from an immune person to a susceptible one. Host immune system doesn’t actually respond; Anti-venome for snake bites.

Q: Describe humoral immunity and give an example.
A: Molecules in blood recognize and eliminate antigens; Antibodies (products of B cells and plasma cells.

Q: What cells are responsible for cell-mediated immunity?
A: T lymphocytes and their products.

Q: What is the Clonal Selection theory?
A: Antigen exposure selects a specific pre-existing clone and activates it, leading to proliferation and differentiation of cells against the antigen.