Fig. 3From: β2-microglobulin has a different regulatory molecular mechanism between ER+ and ER− breast cancer with HER2−Representative immunohistochemical staining images in both HER2− breast cancer tissues. a, i Cancer tissues staining without primary antibody as negative control. b, j β2M immunoreactivity. c, k HIF-1α immunoreactivity. d, l p-CREB immunoreactivity. e, m VEGF immunoreactivity. f, n p-SGK1 immunoreactivity. g, o p-ERK1/2 immunoreactivity. h, p Bcl-2 immunoreactivity. Magnification, 100×. Black boxes, a magnification of the tumor areas. Arrows, positive staining. Scale bars, 200 μmBack to article page