In extended Higgs models, a discrete symmetry is needed in the quark sector to avoid tree-level flavor-changing neutral currents. However, this not necessary case lepton sector. We consider model which one couples quarks and three others couple electron, muon tau, respectively. This four-doublet presented with full scalar potential gauge Yukawa couplings. The constraints from boundedness, pertu...

Background. Platelet deposition at the site of injury caused by balloon angioplasty is associated with acute closure and restenosis. Methods and Results. In a new ex vivo whole artery angioplasty model, we examined the roles of thrombin inhibition with D-Phe-Pro-ArgCH2C1 (PPACK) and inhibition of the platelet membrane fibrinogen receptor glycoprotein lIb/Illa (GPIIb/IIIa) with monoclonal antibo...

Pressure in oesophageal varices has been measured either by using an invasive puncture technique, or a non-invasive pneumatic pressure sensor. Experience with these techniques and their limitations prompted a new way of measuring pressure in oesophageal varices. This was done by observing through a transparent plastic balloon fixed to the tip of a gastroscope the pressure equilibrium between th...