Università della Svizzera italiana

Role of CXCL13 and CCL20 in the recruitment of B cells to inflammatory foci in chronic arthritis

Armas-González, Estefanía ; Domínguez-Luis, María Jesús ; Díaz-Martín, Ana ; Arce-Franco, Mayte ; Castro-Hernández, Javier ; Danelon, Gabriela ; Hernández-Hernández, Vanesa ; Bustabad-Reyes, Sagrario ; Cantabrana, Alberto ; Uguccioni ; Díaz-González, Federico

In: Arthritis research & therapy, 2018, vol. 20, p. 114

Background: B cells exert their pathogenic action in rheumatoid arthritis (RA) locally in the synovium. This study was undertaken to elucidate the chemokines responsible for the recruitment of B cells in the inflamed synovium, taking into account that the rich chemokine milieu present in the synovial tissue can fine-tune modulate discrete chemokine receptors. Methods: Expression levels of...

Université de Fribourg

Charge-density oscillation on graphite induced by the interference of electron waves

Ruffieux, Pascal ; Melle-Franco, M. ; Gröning, Oliver ; Bielmann, Michael ; Zerbetto, F. ; Gröning, Pierangelo

In: Physical Review B, 2005, vol. 71, p. 153403

We report on a pronounced redistribution of the local electronic density of states at the graphite surface, which is induced by the presence of low energy hydrogen-ion induced point defects. Scanning tunneling microscopy reveals standing waves in the local density of states, which are due to backscattering of electron wave functions at individual point defects. The superstructure thereby formed...