Figure 1.

Infiltrating Ductal Carcinoma (IDC). a, b) Faint histochemical activity (dark granules) is seen in the epithelial cells from normal breast tissue and is negative in the connective tissue.. c) The florid complex and irregularly shaped epithelial bridges resulted in superimposed micropapillary features. d) Enhanced enzyme activity is evident in the epithelial elements. X 200, a and c; X 400, b and d.