Fig. 2.

Effects of a co-administration of mephedrone (2.5 mg/kg, i.p.), nicotine (0.05 mg/kg, s.c.) or saline on memory consolidation trial using the PA test in mice. Appropriate groups of mice received compounds immediately after the pre-test. Data represent the mean ± SEM and are expressed as latency index (IL); n = 8–10; ^{^^^} p < 0.001 versus nicotine-treated control group; ^## p < 0.01 versus mephedrone-treated control group; Tukey’s test