| foreskin | <anatomy> The fold of skin which covers the glans of the penis; the prepuce. Source: Websters Dictionary (01 Mar 1998) |
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| stick-tight | <botany> Beggar's ticks. Source: Websters Dictionary (01 Mar 1998) |
| tight junction | <cell biology> Specialised intercellular junction in which the two plasma membranes are separated by only 1-2nm. Found near the apical surface of cells in simple epithelia, forms a sealing gasket around the cell. Prevents fluid moving through the intercellular gap and the lateral diffusion of intrinsic membrane proteins between apical and baso lateral domains of the plasma membrane. (18 Nov 1997) |
| tight junctions | Cell-cell junctions that seal adjacent epithelial cells together, preventing the passage of most dissolved molecules from one side of the epithelial sheet to the other. (alberts et al., molecular biology of the cell, 2nd ed, pg-22) (12 Dec 1998) |