Myorelaxation, respiratory depression and electrocardiographic changes caused by the administration of extract of açai (Euterpe oleracea Mart.) stone in rats oleh Nilton Akio Muto, Moisés Hamoy, David Cristian Rodrigues Lucas, Bruno Brito Teixeira, Adrielle Felicia Santos Almeida, Thamires de Castro Navegantes, Vaniza Sheila de Sousa Ferreira de Sá, Brenda Pinto de Moraes, João Paulo do Vale Medeiros, Yasmin Amorim dos Santos, Claúdia Quintino da Rocha, Vanessa Joia de Mello, Hervé Rogez