What are the 4 main types of germs in the immune system

Question: What are the 4 main types of germs in the immune system
- Keywords:
  germ,
  immune system,
  main type
Asked by malena.alonso to Sian, Ben, Max, Lizzie on 9 Mar 2018.
- Ben Mulhearn answered on 9 Mar 2018:
  
  Well, I would have to say (in order from largest to smallest): Parasites, fungi, bacteria, viruses.
- Lizzie Wright answered on 10 Mar 2018:
  
  I would agree!

Question: What are the 4 main types of germs in the immune system