Infection & The Immune System

There are many different infectious diseases and illnesses which we could catch at any time. These diseases are all transferred in a different way and so we need a variety of defence mechanisms in order to keep us healthy and disease-free. In this video we examine the body's defences against these diseases such as the immune system. Contact me: http://www.sunnylearning.com/contact.html Additional study material: http://www.sunnylearning.com