Figure 3: Light microscopic sections obtained from the hippocampus of rats in all groups. (a and b) C 1–21 group (c and d) EMF 1–21 group (e and f) C 21–60 group (g and h) EMF 21–60 group (i and j) C 1–60 group (k and l) EMF 1–60. CA1, CA2 and CA3: Hippocampus regions; DG: Dentate gyrus; black arrow: Neuron; staining: Cresyl violet, A, C, E, G, I, ×40; B, D, F, H, J, ×400