Molecular, Cellular and Structural Immunology 3

The lymphatic system has specialized vessels that drain fluid from tissues into and out of the lymph nodes and then into the blood which is essential for tissue fluid homeostasis and immune responses. Interstitial fluid is formed in all vascularized tissues by movement of a filtrate of plasma out of capillaries.

Skin, epithelia and parenchymal organs contain numerous lymphatic capillaries that absorb interstital fluid from spaces between tissue cells. 

Lymphatic capillaries are blind-ended vascular channels lined by overlapping endothelial cells…