'5-HT IND.1A' and '5-HT IND.2A' receptors in the rat dorsal periaqueductal gray mediate the antipanic-like effect induced by the stimulation of serotonergic neurons in the dorsal raphe nucleus - Pobbe, Roger Luís Henschel; Zangrossi Junior, Hélio (Psychopharmacology, 2005)