1. 2.5 – Cell wars (defenders)
Chapter 2
2.5 – Cell wars (defenders)

2. White Blood Cells (WBC)
Your _______ system defends you by destroying invaders
One defence is to attack the invaders directly with _______ blood cells
Once the invaders are _________ by the cells, the wbc’s lysosomes release special chemicals that destroy the invader
This also __________ the wbc

3. White Blood Cells (WBC
Pus is made of the strands of _________ and cell _________ that remain after invaders have been attacked by wbc
As well as attacking _________ wbc also kill body cells that have been damaged by bacteria, viruses, or poisonous chemicals

4. White Blood Cells (WBC)

5. Antibodies Your immune system can also use ___________
Antibodies are made by a special type of wbc
Antibodies are large molecules that lock onto invading organisms

6. Antibodies
Invading cells all have distinctive molecules called _________ on their cell membranes or protein coats
These markers have a __________ shape
The antibodies are designed to fit that shape and lock onto them
Each type of antibody works on only one type of invader

7. Antibodies