Trapping bacteria.
Yes, they swell and stop stop harmful bacteria getting into the body, they also filter the body's fluid
Lymph Nodes.
The lymph system is responsible for the body's immune defenses. Without the lymph organs the body can not fight disease.
I think you may mean lymph the fluid in which the white blood cells that fight disease are carried.
to fight against infection like disease and bacteria e.g lymph node
Because lymph nodes are part of the immune system and the immune system fights diseases.
The yellowish fluid that carries disease-fighting cells is called lymph. Lymph plays a crucial role in the immune system by transporting white blood cells, proteins, and other substances to help fight infections and maintain overall health.
Lymph nodes become larger and tender when they are working to fight off an infection. This is a sign that the immune system is activated and producing more white blood cells to help combat the infection.
fight disease
The Lymphatic System fights against diseases by fighting pathogens, or viruses and bacteria that make your body sick. When the Lymphatic System fights pathogens, it helps fight pathogens which give you a chance unlikely to get a disease.
The Peyer's pathces are lymph nodes in the small intestine. They help fight pathogens.