figure 1 10x figure 2 20x 
Figure 1. H&E, 10x.  Figure 2. H&E, 20x. 
figure 3 20x  figure 4 er 10x 
 Figure 3. H&E, 20x. Figure 4. The tumor cells were negative for ER; note the presence of ER expression in adjacent normal ducts, 10x.