| A | B |
| phagocytes | white blood cells that engulf pathogens |
| plasma cells | b cells that release antibodies |
| memory B cells | remain in the body and store antibodies in case of future exposure |
| cytotoxic T cells | trigger apoptosis in infected cells |
| helper T cells | activated by antigens, release cytokinines |
| mast cells | release histamines and prostaglandins |
| mucus | sticky lining of internal surfaces |
| antigen presenting cells | engulf pathogen and place antigen in plasma membrane |
| histamine | cause blood vessels to open enough for white blood cells to pass through |
| prostaglandins | lipids that cause the inflammation response |
| antigens | feature of pathogens that stimulated antibody production |
| antibody | chemical the fits on surface antigen and disables a pathogen |