Figure 3.

Comparison of behavioral endpoints in the novel tank exploration test among 30-day 50 ppb PbCl₂-exposed groups and a control group. Six parameters were evaluated: (A) average speed, (B) freezing time movement ratio, (C) time in top duration, (D) number of entries to the top, (E) latency to enter the top, and (F) total distance traveled in the top. Data are expressed as mean ± SEM and analyzed by two-way ANOVA with Sidak’s multiple comparisons test (n = 30; */$ p ≤ 0.05, $$ p ≤ 0.01, and **** p ≤ 0.0001).