Figure 1. H&E, 5x.	Figure 2. H&E, 5x.
Figure 3. The tumor cells were negative for estrogen receptor (ER); note the positive control in the adjacent normal duct epithelium (5x). The tumor cells were also PR negative (not shown).	Figure 4. The tumor cells were positive for HER-2/neu receptor (scores 2+ and 3+ in >10% of tumor cells); note the lack of HER-2/neu expression in the adjacent normal duct epithelium (5x).