Department of Basic and Oral Biology School of Dentistry of Ribeirao Preto University of Sao Paulo Ribeir?o Preto SP Brazil;
Department of Radiotherapy Triangulo Mineiro Federal University Uberaba Minas Gerais Brazil;
Biomedical Sciences Institute Federal University of Uberlandia Uberlandia Minas Gerais Brazil;
calvaria; cell therapy; irradiation; osteoblasts; rats;