Immunology

2. Activated by antigen presented on MHC II CD4+
8. Regulates development, effector function, and homeostasis of cells of the skeletal, neuronal and immune systems
9. Phagocytes and granulocytes
11. Recognizing non self in innate immunity
13. Happens in bone marrow during development
14. Relatively rare circulating granulocyte that fights parasitic infections
18. Lymphoid that does not recognize antigens
20. Takes antigens from periphery and presents them to lymph nodes to activate adaptive immune response
22. Activated by recognizing antigen CD40+
24. Primary: Bone marrow and Thymus, Secondary: Spleen and lymph nodes
25. Granulocyte found in tissues especially epithelia
27. Terminally differentiated

1. Circulating precursor to phagocytic cells
3. Circulating granulocyte that fights parasitic infections and contributes to asthma and other allergies
4. T-cells and B-cells
5. Becomes faster and stronger with each new exposure
6. Has Fc region with a flexible hinge
7. Basophils, mast cells, natural killer cells
10. Cells that directly recognize antigens
12. Short lived phagocyte that is recruited to the site of infection
15. Monocytes, neutrophils, dendritic cells, macrophages
16. Recognizing non self in adaptive immunity
17. Antigen presenting cell that can be activated by T cells and antibody binding
19. Often stimulate cell proliferation and/or differentiation of blood cells
21. Kills cells presenting antigens on MHC I via its TCR CD8+
23. Same response every time
26. Produced by a lot of cells in response to PAMPs, promotes inflammation