The operator algebras associated to non commutative free groups have received a lot of attention, by F.J. Murray and J. von Neumann and by later workers. We review some properties of these algebras, both for free groups and for other groups such as lattices in Lie groups and Gromov hyperbolic groups. Our guideline is the following list of results for the free group Fn over n ≥ 2 generators. (1)...

The underlying mechanism of Fusobacterium nucleatum (Fn) in the carcinogenesis of colorectal cancer (CRC) is poorly understood. Here, we examined Fn abundance in CRC tissues, as well as β-catenin, TLR4 and PAK1 protein abundance in Fn positive and Fn negative CRCs. Furthermore, we isolated a strain of Fn (F01) from a CRC tissue and examined whether Fn (F01) infection of colon cancer cells activ...

Plasma fibronectin (FN) binds fibrin in vitro by both noncovalent and covalent bonds and is decreased in DIC. In rabbits, conventionally purified 125I-FN had a complex blood clearance with a late t1/2 of 71 hr. A large portion was apparently altered, as evinced by rapid clearance and an intravascular/total body ratio (C1) of 0.28-0.51. 3H-labeled FN, made in vivo by injection of 3H amino acids,...

The presence of fibronectin (Fn) in rheumatoid pannus was investigated by an immunoelectron microscopic method using horseradish peroxidase-conjugated antibody to stain Fn. Large amounts of Fn were demonstrated in the interstitial collagenous tissue of invasive rheumatoid pannus. Fn was also observed on the surface of both fibroblast-like and macrophage-like pannus cells, suggesting that it was...

It was our objective to study the role of mechanical stimulation on fibronectin (FN) reorganization and recruitment by exposing fibroblasts to shear fluid flow and equibiaxial stretch. Mechanical stimulation was also combined with a Rho inhibitor to probe their coupled effects on FN. Mechanically stimulated cells revealed a localization of FN around the cell periphery as well as an increase in ...

Fibronectin (FN) forms fibrillar networks coupling cells to the extracellular matrix. The formation of FN fibrils, fibrillogenesis, is a tightly regulated process involving the exposure of cryptic binding sites in individual FN type III (FN-III) repeats presumably exposed by mechanical tension. The FN-III1 module has been previously proposed to contain such cryptic sites that promote the assemb...

Poly(ethyl acrylate) (PEA) induces the formation of biomimetic fibronectin (FN) (nano)networks upon simple adsorption from solutions, a process referred to as material-driven FN fibrillogenesis. The ability of PEA to organize FN has been demonstrated in 2D and 2.5D environments, but not as yet in 3D scaffolds, which incorporate three-dimensionality and chemical crosslinkers that may influence i...

Febrilni napadi (FN) su najčešći konvulzivni poremećaji u detinjstvu, koji se sreću kod 2–5% dece pre pete godine života u evropskoj i američkoj, a kod 6–9% u japanskoj populaciji 1, . Prema definiciji koju je dala Internacionalna liga za borbu protiv epilepsije, FN je „epileptični napad koji se javlja u detinjstvu, posle prvog meseca života, udružen sa febrilnom bolešću koja ne zahvata central...

For the free group FN of finite rank N ≥ 2 we construct a canonical Bonahon-type, continuous and Out(FN )-invariant geometric intersection form 〈 , 〉 : cv(FN ) × Curr(FN ) → R≥0. Here cv(FN ) is the closure of unprojectivized Culler-Vogtmann’s Outer space cv(FN ) in the equivariant Gromov-Hausdorff convergence topology (or, equivalently, in the length function topology). It is known that cv(FN ...