Brazilian Journal of Microbiology v.34 suppl.1 2003 Brazilian Journal of Microbiology Sociedade Brasileira de Microbiologia (SBM) instacron:SBM ResearcherID Brazilian Journal of Microbiology, Volume: 34 Supplement 1, Pages: 123-124, Published: NOV 2003 Repositório Institucional da UFRGS Universidade Federal do Rio Grande do Sul (UFRGS) instacron:UFRGS