| Flap 1 |
Flap 2 |
| these cells are the first ones to fight invaders | white blood cells |
| act as little flags so the invaders can be quickly andeasily destroyed | antibodies |
| this is where T cells and B cells are created and trained | thymus |
| these cells create antibodies | B cells |
| Send out a chemical that lets the other cells know whatvirus or bacteria has invaded the body | T cells |
| After pus forms, these arrive to destroy the invaders | macrophages |
