immunology

2. number of levels of immune defence in our body
3. cells cells that keep us healthy by remembering the microbes that attack our body
5. another name for innate immunity
9. able to differentiate into macrophages in the tissues
10. rarest circulating white blood cells
11. a type of white blood cells that stain orange pink in colour

1. process in which neutrophils use to kill microbes
4. produced by B cells
6. white blood cells that have 3 sub types involved in both innate and adpative immune system
7. tiny receptors on B and T cell's surface that can recognise specific parts of the microbes
8. most abundant circulating white blood cells