1. IMMUNE SYSTEM II SPECIFIC RESPONSEPP

2. RECOGNIZING PATHOGENS
Wbc have receptors to the antigens (pieces of a pathogen) that cause an immune response

4. INITIAL RESPONSE
Macrophage engulfs pathogen and puts antigens on its surface
Helper T-cell binds to antigens
Macrophage releases a chemical (INK-1) which causes the Helper T-cell to release INK-2

5. Initial
response
INK-2
INK-2
Cell-mediated
T-Cell production
Humoral
B-Cell production

7. CELL MEDIATED
GOAL: Attacks infected cells to prevent further infection by shutting down the “factory”
T-cell production
Cytotoxic: initiates cell death in infected cells
Suppressor: helps to stop T-cell production

8. Initial
response
INK-2
INK-2
Cell-mediated
T-Cell production
Humoral
B-Cell production

10. HUMORAL
GOAL: Attack viruses in the blood so they cannot infect other cells
B-cell production
B-cells change to plasma cells
plasma cells produce and secrete antibodies that attack and clump viruses
Clumped viruses cannot infect new cells
Macrophages digest the clump

11. PRIMARY AND SECONDARY IMMUNE RESPONSE
Primary: 1st time body encounters pathogens
Secondary: 2nd time body encounters pathogen with memory cells (leftover B-cells and T-cells)