Classification
- Shape
- Cocci
- Bacilli
- Vibrios - comma shaped organisms
- Spirilla - spiral rods that don't bend
- Spirochetes - spiral rods that bend in the middle
- Actinomycetes - complex branching dos
- Gram Stain
- Positive
- Negative
- Ziehl-Neelsen stain: for mycobacterium (which possess a waxy coat and don't stain)
Pathological Effects
- Proliferate in tissues
- Resist phagocytosis in somce cases
- Secrete exotoxins and release endotoxins
- Attach to cell membranes and damage them