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Swollen Lymph Nodes Causes, Symptoms and More Information

Lymph Node Function. Lymph nodes are crucial to the prevention of systemic infections in the body because of the way that they act like a stopping point for bacteria and viruses. For example, if a person has a cut on their arm that becomes infected, the lymph nodes in the arm will quickly become swollen as a normal reaction to the healing process. It is only when the lymph nodes in the affected area become too full, or a person has a poor immune system, that the infection can get past them. If this happens, the lymph nodes in other areas of the body may start to swell up too as the body becomes overwhelmed with the bacteria or virus.


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