Lymph is a colorless fluid collected from tissues in most parts of the body and returned to the blood via the lymphatic system. It is about 95% water. Its composition is similar to plasma of blood, but contains less protein. Lymph mainly contains white blood cells (mainly lymphocytes).
Lymph carries digested and absorbed fat from intestine and drains excess fluid from extracellular space back into blood.
Lymph supplies mature lymphocytes to the blood.
Lymph acts to remove bacteria and other particles.
It also maintains fluid balance.
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