Relier Pairs Immune System: Match the Key ConceptsVersion en ligne Match each immune concept with its concise description to reinforce understanding of innate and adaptive immunity. par Paula 1 Bone marrow 2 Macrophage 3 T Cells 4 The red pulp in the spleen contains 5 Peyer's Patches 6 The white pulp in the spleen contains 7 Neutrophil 8 Cytotoxic T cell 9 Spleen 10 Lymph node 11 Antibody 12 Helper T cell 13 Lymphatic system 14 B Cells Filters blood; contains white and red pulp Kills pathogens (via. apoptosis) Secretes cytokines to activate other cells Y-shaped protein that neutralizes pathogens Blood cell production and B cell maturation site Cell mediated immunity First phagocytic defender of pathogens Anti-body mediated T & B cells Macrophages Filters lymph Network of vessels and organs draining interstitial fluid Tissue phagocyte that engulfs debris and microbes Found in the ileum and fights infections that travel viz digestive system