What does a neutrophil do?

What causes allergies?

What is an autoimmune disorder?

Thanks in advance-- btw- I have no idea to any of them- hence why i'm asking.

♥dino♥

http://medical-dictionary.thefreedictionary.com/neutrophil

http://health.howstuffworks.com/diseases-conditions/allergies/allergy-basics/what-causes-allergic-reactions.htm

http://www.nlm.nih.gov/medlineplus/ency/article/000816.htm