Barrier

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Barrier

1. See: Trade barrier.

2. See: Barrier Option.
References in periodicals archive ?
The blood-testis barrier in the rat and the physiological compartmentation of the seminiferous epithelium.
Sertoli cells in the basal part-side adjacent cells connected by tight junctions form the blood-testis barrier and seminiferous epithelium are divided into two portions of basal and lumen adjacent that creates a safe environment and protects spermatozoa, keeping it isolated from the blood.
Key genes affected by CBZ, IPR and CCK were Tnfa and Tgffl, genes encoding cytoskeletal proteins such as actins, tubulin and nectin (Pvrl) and also the claudins family (Cldn), E-cadherin, occludin, ZO1 (Tjpl), ZO2 (Tjp2), and epsin 3, in coherence with most of the recent literature concerning blood-testis barrier (BTB) dynamics (Jiang et al.
Dym M (1973) The fine structure of the monkey (Macaca) Sertoli cell and its role in maintaining the blood-testis barrier.
N-WASP is required for structural integrity of the blood-testis barrier," PLoS Genetics 10(6): e1004447.
An orchiectomy, especially in early-stage disease, is advantageous because it provides tissue for pathologic evaluation and removes a sanctuary site, as the blood-testis barrier makes testicular tumors inaccessible to systemic chemotherapy.
Regulation of blood-testis barrier dynamics: an in vivo study.
These cells are joined laterally by tight junctions to form the blood-testis barrier.
The blood-testis barrier forms an impermeable lining around the inside of the tubule and protects vulnerable growing sperm from infections, toxins and immune system cells.
Demonstration of a functional blood-testis barrier to acetaldehyde.
By now, it is common knowledge among researchers that ABC transporters play a key role in the function of the blood-brain barrier (BBB), blood-CSF barrier, blood-testis barrier, intestinal epithelia (absorption), airway epithelia, liver epithelia and the kidney epithelia," explained Gabor Heltovics, SOLVO's business development director.