Primary immunodeficiencies: a diagnostic challenge? Dirceu Solé;

Combined immunodeficiencies Carolina Sanchez Aranda; Rafaela Rola Guimarães; Mariana de Gouveia-Pereira Pimentel;

Different immunological patterns of Down syndrome patients with and without recurrent infections Kamila Rosa Martins; Flavia Araujo Alves; Luiz Roberto da Silva; Lauren Olivia Alves da Silva; Gesmar Rodrigues Silva Segundo;