Frequency of ALDH+ cells in benign ductules of pre-menopausal women of different ages. Representative images of benign ductules in breast tissue from a 31-year-old patient (A) and from a and a 50-year-old patient (B) demonstrating significantly higher frequency of ALDH+ cells (arrows) with increasing age. Scale bar in A represents 100 μm in both images.
Isfoss et al. BMC Clinical Pathology 2013 13:28 doi:10.1186/1472-6890-13-28