[1] State Univ Campinas UNICAMP, Inst Biol, Grad Program Cell & Struct Biol, Campinas, SP, Brazil
[2] Sao Paulo State Univ Unesp, Inst Biosci, Dept Morphol, Botucatu, SP, Brazil
[3] Sao Paulo State Univ Unesp, Med Sch, Dept Pathol, Botucatu, SP, Brazil
[4] Univ Sao Paulo, Sch Dent, Dept Morphol Stomatol & Physiol, Ribeirao Preto, SP, Brazil