Inhibition on neuronal nitric oxide synthase in the dorsolateral periaqueductal gray induces dual effects in the elevated plus maze: interaction with the local cannabinoid system - Magesto, A. C.; Lisboa, S. F.; Moraes, Leonardo Resstel Barbosa; Guimarães, Francisco Silveira (Reunião Anual da Federação de Sociedades de Biologia Experimental (FeSBE), 2011)