IMMUNE SYSTEM II SPECIFIC RESPONSE

1
IMMUNE SYSTEM IISPECIFIC RESPONSE

• PP. 961-966

2
RECOGNIZING PATHOGENS

• wbc have receptors to the antigens (pieces of a
  pathogen) that cause an immune response

3
(No Transcript)
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
Humoral B-Cell production
Cell-mediated T-Cell production
6
(No Transcript)
7
TYPES OF T-CELLS

• Cytotoxic initiates cell death in infected cells
• Suppressor helps to stop T-cell production

8
Initial response
INK-2
INK-2
Humoral B-Cell production
Cell-mediated T-Cell production
9
(No Transcript)
10
HUMORAL

• 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)