1. Hematology and Stem Cell Laboratory, Faculty of Pharmacy; Federal University of Rio Grande do Sul; Porto Alegre RS Brazil
2. Stem Cell Laboratory; Fundamental Health Science Institute, Federal University of Rio Grande do Sul; Porto Alegre RS Brazil
3. Post Graduate Program in Material Science; Federal University of Rio Grande do Sul; Porto Alegre RS Brazil
4. Laboratory of Organic Synthesis and Polymers; Institute of Chemistry, Federal University of Rio Grande do Sul; Porto Alegre RS Brazil
5. Post Graduate Program in Physiology; Federal University of Rio Grande do Sul; Porto Alegre RS Brazil
6. Department of Chemistry; Philipps University; Marburg Germany
7. Stem Cell Research Institute; Porto Alegre RS Brazil