Brazilian Archives of Biology and Technology, Vol 51, Iss spe, Pp 115-120 (2008) Brazilian Archives of Biology and Technology v.51 n.spe 2008 Brazilian Archives of Biology and Technology Instituto de Tecnologia do Paraná (Tecpar) instacron:TECPAR Brazilian Archives of Biology and Technology, Volume: 51, Issue: spe, Pages: 115-120, Published: DEC 2008