| Name: | epithelial cell |
|---|---|
| Synonyms: | epithelial cells |
| Definition: | A cell that is usually found in a two-dimensional sheet with a free surface. |
| Ontology: | Anatomy Ontology [ZFA:0009034] |
| Name: | bicellular tight junction |
|---|---|
| Synonyms: | zonula occludens |
| Definition: | An occluding cell-cell junction that is composed of a branching network of sealing strands that completely encircles the apical end of each cell in an epithelial sheet; the outer leaflets of the two interacting plasma membranes are seen to be tightly apposed where sealing strands are present. Each sealing strand is composed of a long row of transmembrane adhesion proteins embedded in each of the two interacting plasma membranes. |
| Ontology: | GO: Cellular Component [GO:0005923] QuickGO AmiGO |