Final answer:
The lymph leaving the lymph nodes contains a large number of macrophages.
Step-by-step explanation:
The lymph leaving the lymph nodes contains a large number of macrophages.
Macrophages are a type of white blood cell that play a crucial role in the immune response. They are responsible for engulfing and destroying pathogens, dead cells, and other foreign substances in the lymph. This helps to clean the lymph before it is returned to circulation and prevents the spread of infection.
Other cells found in the lymph nodes include dendritic cells, B cells, T cells, and plasma cells.