Figure 1

Positive (A) and negative (B) expression of aldehyde dehydrogenase 1 (ALDH1) protein in tumour cells of breast carcinomas (both × 400 magnification).

Positive (A) and negative (B) expression of aldehyde dehydrogenase 1 (ALDH1) protein in tumour cells of breast carcinomas (both × 400 magnification).