{\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 Guzman VB, Morgun A, Shulzhenko N, Mine KL, Gon\'e7alves-Primo A, Musatti CC, Gerbase-Delima M.? 2005.??Characterization of CD28, CTLA4, and ICOS polymorphisms in three Brazilian ethnic groups.. Human immunology. 66(7):773-776.\par \par }