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The most permeable vessels in the body are the capillaries, particularly the fenestrated and sinusoidal types. Fenestrated capillaries have small pores that allow for increased permeability to small molecules and water, while sinusoidal capillaries have larger openings that facilitate the passage of larger proteins and cells. This high permeability is crucial for processes such as nutrient exchange and immune responses in tissues.

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1mo ago

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