Review of 13A Specific Immunity

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Across
  1. 4. repeated exposure to pathogens stimulates ___ cells
  2. 5. lymphocytes that require antigen presentation
  3. 6. CD4+ cells are activated to become ____ cells
  4. 7. proteins secreted by B cells
Down
  1. 1. lymphocytes that make antibodies
  2. 2. CD8+ cells are activated to become ____ cells
  3. 3. molecules on almost all cells that display antigens
  4. 7. MP, dendritic cells & B cells are ___