{\rtf1\ansi\deff0\deftab360 {\fonttbl {\f0\fswiss\fcharset0 Arial} {\f1\froman\fcharset0 Times New Roman} {\f2\fswiss\fcharset0 Verdana} {\f3\froman\fcharset2 Symbol} } {\colortbl; \red0\green0\blue0; } {\info {\author Biblio}{\operator }{\title Biblio RTF Export}} \f1\fs24 \paperw11907\paperh16839 \pgncont\pgndec\pgnstarts1\pgnrestart Stieger SM, Caskey CF, Adamson RH, Qin S, Curry F-RE, Wisner ER, Ferrara KW.? 2007.??Enhancement of vascular permeability with low-frequency contrast-enhanced ultrasound in the chorioallantoic membrane model.. Radiology. 243(1):112-21.\par \par }