Figure 2.

IDC Associated with Ductal Carcinoma in situ (DCIS). a, b) Very few AP positive granules (dark granules) are seen in the normal breast. Stromal fibroblasts contain no enzyme activity. c, d) Cords of tumor cells are strongly positive while the stromal tissue is unstained (clear areas). X 200, a and c; X 400, b and d.