Genotypic and phenotypic analysis of Streptococcus mutans from different oral cavity sites of caries-free and caries-active children - Lembo, F. L; Longo, P. L; Ota-Tsuzuki, Cláudia; Rodrigues, Célia Regina Martins Delgado; Mayer, Marcia Pinto Alves (Oral Microbiology and Immunology, 2007)