H9N2 INFLUENZA VIRUS ACQUIRES INTRAVENOUS PATHOGENICITY ON THE INTRODUCTION OF A PAIR OF DI-BASIC AMINO ACID RESIDUES AT THE CLEAVAGE SITE OF THE HEMAGGLUTININ AND CONSECUTIVE PASSAGES IN CHICKENS

Abstract Background Outbreaks of avian influenza Refrigerator (AI) caused by infection with low pathogenic H9N2 viruses have occurred in poultry, resulting in serious economic losses in Asia and the Middle East.It has been difficult to eradicate the H9N2 virus because of its low pathogenicity, frequently causing in apparent infection.It is importan

Developing an implantable, telemetric pressure measuring system for venous applications makes a high degree of miniaturization necessary.Thus the influence on the measurement environment is minimized and the risk of thrombosis at small flow blood velocities is decreased.But these systems are limited in terms of accuracy and resolution.The asked sys

We study the reflection and transmission coefficients of plane waves incident at an interface between two isotropic thermoelastic half spaces and compare them with those of the elastic case.The models include the classical-Biot (B) and extended Lord-Shulman (LS) theories, and predict reflected and transmitted fast-compressional (P), thermal (T) and