All animals were handled in accordance with the standards established in the Guide for the Care and Use of Laboratory Animals' Institute of Laboratory Animal Resources, National Academy of Sciences, Washington, D. C. 1996 and the Ethical Principles for Animal Experiments of the Colégio Brasileiro de Experimentação Animal COBEA were duly followed. The study was approved by the Ethics Committee on Animal Experiments of the Universidade de Brasília, Brazil.
Todos los animales recibieron cuidados de acuerdo con las normas establecidas en el "Guide for the Care and Use of Laboratory Animals" Institute of Laboratory Animal Resources, National Academy of Sciences, Washington, D. C. 1996 y seguido los Principios Éticos en Experimentación Animal del Colégio Brasileiro de Experimentação Animal COBEA, siendo el trabajo aprobado por el Comité de Ética en Uso Animal de la Universidad de Brasilia, Brasil.
Todos os animais receberam cuidados de acordo com as normas estabelecidas no "Guide for the Care and Use of Laboratory Animals' Institute of Laboratory Animal Resources, National Academy of Sciences, Washington, D. C. 1996 e seguido os Princípios Éticos na Experimentação Animal do Colégio Brasileiro de Experimentação Animal COBEA, sendo o trabalho aprovado pelo Comitê de Ética no Uso Animal da Universidade de Brasília, Brasil.