Guaraná, a supplement rich in caffeine and catechin, modulates cytokines: evidence from human in vitro and in vivo protocols. - Costa Krewer, Cristina; Suleiman, Leila; Duarte, Marta; Ribeiro, Euler; Mostardeiro, Clarice; Montano, Marco; Ugalde Marques da Rocha, Maria; Algarve, Thais; Bresciani, Guilherme; Cruz, Ivana (European Food Research & Technology, 2014)