A colorless fluid containing white blood cells that circulates throughout the lymphatic system, helping to fight infection and disease.
From Latin 'lympha' meaning clear water or spring water. The term was applied to the bodily fluid because of its clear, water-like appearance when first observed by anatomists.
Ancient Romans believed lympha was literally water from sacred springs that had healing powers. Modern medicine has proven they weren't entirely wrong - lymph is indeed crucial for healing and immune function.
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