What can Lymph nodes can be described as?

Lymph nodes are small, bean-shaped structures that are part of the lymphatic system, serving as filters for harmful substances. They contain immune cells that help the body fight infections and diseases by trapping pathogens and cancer cells. Lymph nodes are distributed throughout the body, particularly in areas like the neck, armpits, and groin, and they play a crucial role in the immune response. Their swelling can indicate infection or other medical conditions.