Characterization of tumor-infiltrating regulatory T-cell subpopulation in oral squamous cell carcinoma - Souza, T. S.; Gasparoto, T. H.; Ramos, R. N.; Mello Jr, E.; Garlet, Gustavo Pompermaier; Ikoma, M. R. V.; Silva, J. S.; Campanelli, Ana Paula (International Congress of Immunology, 2007)