In vivo effect of intraperitoneal injection of Colivelin on 3-QNB-induced amnesia. A, SA% of C57 mice with 3-QNB treatment (70 ng) in the presence or absence of intraperitoneal preinjection of Colivelin (7 nmol) were compared. B, SA% of CD-1 mice with 3-QNB treatment (17.5 ng) in the presence of intraperitoneal preinjection of increasing doses of Colivelin (1.4, 7, and 35 nmol). C, SA% of CD-1 mice with 3-QNB treatment (17.5 ng) in the presence or absence of intraperitoneal injection of Colivelin or HNG (7 nmol) were compared. Data are shown as means ± SEM. Statistical analyses were performed by one-way ANOVA followed by Fisher's PLSD (*p < 0.05; **p < 0.01).