Tight junction


tight junction n.
An intercellular junction between epithelial cells in which the outer layers of the cell membranes fuse, reducing the ability of larger molecules and water to pass between the cells.

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    [tahyt-lipt] /ˈtaɪtˈlɪpt/ adjective 1. speaking very little; taciturn; close-mouthed. 2. having the lips drawn tight. tight-lipped adjective 1. reticent, secretive, or taciturn 2. with the lips pressed tightly together, as through anger

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