Gonçalves, J.F. de C. Santos Júnior, U.M. dos Silva, J.F. da Arruda, M.R. de Bonates, L.C. de M. Fernandes, A.V. Physiological and anatomical characteristics of leaves of two clones of guarana Subjects--Topical Terms: GUARANÁFOLHAFOTOSSÍNTESETRANSPORTE DE NUTRIENTE