654597.fig.001a
(a)
654597.fig.001b
(b)
654597.fig.001c
(c)
654597.fig.001d
(d)
654597.fig.001e
(e)
654597.fig.001f
(f)
654597.fig.001g
(g)
654597.fig.001h
(h)
654597.fig.001i
(i)
Figure 1: The results of specimen HE staining in restoration area; magnification times of all pictures in Figure 1 are 200. Pictures (a), (d), and (g) belong to group A; pictures (b), (e), and (h) belong to group B;  pictures (c), (f), and (i) belong to group C.