Bacteria are living things that are neither plants nor animals, but belong to a group all by themselves. They are very small--individually not more than one single cell--however there are normally millions of them together, for they can multiply really fast.     See bacteria multiply in just a few hours in a 520 k time lapse movie.    ...

This page tells you about different types of infections and cancer. There is information on     Infections and our immune system     Bacteria     Viruses     Fungal infections     Protozoal infections  Infections and our immune system Infections are caused by tiny...