How do the lymphatic system and the immune system work together?
Some of the cells which take part in the immune system like B cells and T cells are formed in Bone marrow which is primary lymphoid organ ( part of lymphatic system )
After formation , they also get matured here. After maturation they migrate to secondary lymphoid organs like Lymph nodes , spleen etc where they get differentiated and are ready to tackle with the antigens.
Immune system and Lymphatic system work side by side.