_____________12. These are proteins which are released by the natural killer cells through vesicles and disgorges the content, thereby forming a pore. _____________13. These are any substance that elicits immune response. _____________14. This antibody functions mainly as an antigen receptor on B cells that have not been exposed to antigens
_____________12. These are proteins which are released by the natural killer cells through vesicles and disgorges the content, thereby forming a pore.
_____________13. These are any substance that elicits immune response.
_____________14. This antibody functions mainly as an antigen receptor on B cells that have not been exposed to antigens.
_____________15. This is the only antibody capable of crossing the placenta to give passive immunity to fetus.
_____________16. These are type of cytokine that play essential roles in the activation and differentiation of immune cells, as well as proliferation, maturation, migration, and adhesion.
_____________17. Bind peptides fragments derived from pathogens and display them on the cell surface for recognition by the appropriate T cells.
_____________18. The whole cluster of the MHC genes.
_____________19. The mechanism wherein antibodies prevent a toxic protein from binding their target.
_____________20. A pathogen tagged by antibodies is consumed by a macrophage or neutrophil.
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