Fig. 1.Cromolyn inhibited the surgery-induced increase in MC number in the hippocampus. (A) Immunostaining was used to detected mast cell tryptase in the CA1 area of the hippocampus. Scale bar: 50um. (B) Mast cells were stained with toluidine blue (TB) in the CA1 area of the hippocampus. Scale bar: 50um. (C) Quantification of tryptase-positive cells in the CA1 area of the hippocampus. (D) Quantification of mast cells stained with TB. *P<0.05, **P<0.01 vs. the control group. #P<0.05, ##P<0.01 vs. the surgery group. Date are presented as the mean±SD (n=6).