Figure 6 Serum gastrin levels and immunohistochemical staining for gastrin secreting cells in wild‐type (WT) (B) and Aα^0/0 mice (C). Serum gastrin levels in Aα^0/0 mice significantly increased compared with those in WT mice (p<0.01) (A). There was no significant difference in the number of gastrin secreting cells in the antral mucosa of six month old WT (B) and Aα^0/0 mice (C) using antigastrin antibody. Results are expressed as mean (SEM). n = number of mice used. ^∗∗p<0.01 compared with WT mice by the Student's t test. Original magnification: B, C ×100.