Fig. 1

a: Histological section showing a well-differentiated ductal carcinoma of the breast (x 100). b Histological section showing a well-differentiated ductal carcinoma of the breast (x 400). c Histological section showing a moderately-differentiated ductal carcinoma of the breast (x 100). d Histological section showing a moderately-differentiated ductal carcinoma of the breast (x 400). e Histological section showing a poorly-differentiated ductal carcinoma of the breast (x 100). f Histological section showing a poorly-differentiated ductal carcinoma of the breast (x 400)