Immune System

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Across
  1. 2. activate and stimulate b cell (antibody-mediated immunity)
  2. 3. Epithelia, mucous membranes, secretions
  3. 4. takes about 2 weeks to develop peak anitbody levels. IgM and IgG antibody levels do not remain elevated
  4. 5. antigen recoginition and costimulation result in. T cell activation and cell division, producign active Tc cells and memory Tc cells
  5. 7. mhc molecules. class 1:surface of almost all nucleated cells.class 2: antigen-presenting cells
  6. 10. occurs when cd8 t cell encounters an appriopriate antigen on the surface of another cell, bound to a class 1 MHC protein.
Down
  1. 1. Very rqapid inccrease in IgG antibody concentration and rises to the levels much higher then thoses of the primary response.
  2. 3. primary immune response
  3. 5. protein markers on cell surface
  4. 6. active Tc cell destroys the antigen bearing cell. it may use several different mechanisms to kill target cell
  5. 8. parasites, allergens, and histamine
  6. 9. sensitization of B cells
  7. 11. cross through the placenta, secondary immune response, and most abundant antibody