The primary role of our lymphatic system is to protect the body against infection by activating defense mechanisms that make up our immune system.

Lymphocytes are tissue components of lymph, which include T cells and B cells.

B cells make up 12% of the circulating lymphocytes.

White blood cells include monocytes, neutrophils, basophils, and eosinophils.

Lymph nodes are strategically placed to act as filters of the lymph as it moves towards the venous system.

Lymphoid organs include tonsils, thymus, spleen, and bone marrow. 

Follicular dendritic cells are antigen presenting cells found mainly in the skin, nose, lungs, stomach, and intestine.