Fig 4. Effects of chronic treatment with low dose lithium for the density of proteins involved in long-term memory maintenance.

Histograms and vertical bars are means ± SEM. *: p <0.05; **: p <0.01; b: p < 0.0001. The SAMR-1 group is represented in black, the SAMP-8 group is represented in red and SAMP-8-Li group is represented in blue. For these experiments 6 to 7 animals of each group were randomly assigned.