Brazilian Archives of Biology and Technology, Volume: 57, Issue: 1, Pages: 29-36, Published: FEB 2014 Brazilian Archives of Biology and Technology, Vol 57, Iss 1, Pp 29-36 (2014) Brazilian Archives of Biology and Technology v.57 n.1 2014 Brazilian Archives of Biology and Technology Instituto de Tecnologia do Paraná (Tecpar) instacron:TECPAR