Brazilian Propolis of Tetragonisca angustula and Apis mellifera Alexandra C.H.F. Sawaya, Ildenize B.S. Cunha, Maria C. Marcucci, Rosa F. de Oliveira Rodrigues and Marcos N. Eberlin Apidologie, 37 3 (2006) 398-407 Published online: 10 March 2006 DOI: 10.1051/apido:2006011