TY  - JOUR 
T1  - Polymorphism of the Human Immunodeficiency Virus Type 1 in Brazil: Genetic Characterization of the nef Gene and Implications for Vaccine Design
JO  - Memórias do Instituto Oswaldo Cruz
A1  - Guimarães, ML
A1  - Moreira, AS
A1  - Morgado, MG
SN  - 0074-0276
UL  - 10.1590/S0074-02762002000400013
VL  - 97 
Y1  - 2002
PB  - Brasil 
ER  -