Hydroxyapatite and a New Fibrin Sealant Derived from Snake Venom as Scaffold to Treatment of Cranial Defects in Rats oleh Marcelo Rodrigues da Cunha, Fernanda Araujo Menezes, Geovane Ribeiro dos Santos, Clóvis Antônio Lopes Pinto, Benedito Barraviera, Virginia da Conceição Amaro Martins, Ana Maria de Guzzi Plepis, Rui Seabra Ferreira Junior