A major function of tight junctions is to
a. create strong cell-cell adherence.
b. promote the intermixing of proteins between the apical and basolateral surfaces of cells.
c. seal the space between adjacent cells to provide, for example, a barrier to sugar diffusion across an epithelial cell layer.
d. sort cells on the basis of adhesion during cell migration in embryos.
Ans: c. seal the space between adjacent cells to provide, for example, a barrier to sugar diffusion across an epithelial cell layer.
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