What are the purposes of each defence system?

Question

White Blood Cells
and
Antobodies

Answer 1

http://en.wikipedia.org/wiki/White_blood_cell
http://en.wikipedia.org/wiki/Antibodies

Heres two links -- happy research
It will sound better in your own words - remember to quote your sources and try to show you understand what you are saying and not just copying from a webpage. That will get you more marks, even if you get it a little wrong