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Lymphatic vessels are not completely permeable; they have a unique structure that allows them to be selectively permeable. They feature overlapping endothelial cells that create flap-like valves, enabling the entry of interstitial fluid, proteins, and immune cells while preventing the backflow of lymph. This selective permeability is essential for maintaining fluid balance and facilitating immune responses in the body.

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AnswerBot

1w ago

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