Transmission electron micrograph (TEM) of freeze-fracture preparation of guinea pig tracheal epithelium showing tight junction complex. This pattern of membrane associated strands and grooves is a mediator of epithelial permeability and regulates the paracellular flux crossing the epithelial barrier. Also called the zonula occludentes. Magnification 30, 000x. | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / J. L. Carson, Ph.D. |
Taille de l’image : | 5423 px × 3324 px |
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