Bacteria:
Friend or Foe 
Bacteria are responsible for a large number of diseases that affect the human
body
Cells Alive!
A great educational site, Lots of Information and pictures of bacteria. It is updated
frequently.
Fighting
Back
Find out how to fight bacteria hanging out on food.
How Penicillin Kills Bacteria
Cool Pictures and a movie of Penicillin killing bacteria.
Microbiology: Bacteria
Pictures and diagrams of bacteria, written in a textbook format, very informative.
Germ
Warfare
How to fight germs, viruses and bacteria in your house to keep healthy.
Influenza Virus
Electron microscope pictures and information on the influenza virus. These images
are really fascinating!
Virus Ultra
Structure
Learn more about the make-up of a virus. Good pictures.