The immune system uses antigens to identify:
Abnormal body cells - cells which are cancerous or infected by a pathogen
Pathogens - Organisms which cause disease
Toxins - Molecules which harm the body, they can be produced by bacteria
The immune system uses antigens to identify:
Abnormal body cells - cells which are cancerous or infected by a pathogen
Pathogens - Organisms which cause disease
Toxins - Molecules which harm the body, they can be produced by bacteria