Antinociceptive activity of the ethanolic extract, fractions, and aggregatin D isolated from Sinningia aggregata tubers. oleh Geórgea V Souza, Alex S Simas, Amanda L Bastos-Pereira, Gisele R A Frois, João L C Ribas, Maria H Verdan, Cândida A L Kassuya, Maria E Stefanello, Aleksander R Zampronio