Cooperation between CD4+ T Cells and Humoral Immunity Is Critical for Protection against Dengue Using a DNA Vaccine Based on the NS1 Antigen. oleh Antônio J S Gonçalves, Edson R A Oliveira, Simone M Costa, Marciano V Paes, Juliana F A Silva, Adriana S Azevedo, Marcio Mantuano-Barradas, Ana Cristina M A Nogueira, Cecília J Almeida, Ada M B Alves