Table 2 Immunophenotypic profile of the immune cells in the normal breast, benign proliferative breast disease, ductal carcinoma in situ and infiltrating ductal carcinoma in both parenchyma and stroma.

	CD3+		CD20+		CD68+		Granzyme B+
	Parenchyma	Stroma	Parenchyma	Stroma	Parenchyma	Stroma	Parenchyma	Stroma
Normal	2.8 (1.0)	1.4 (0.6)	3.2 (1.0)	0.7 (0.3)	1.3 (0.7)	1.0 (0.6)	0.5 (0.3)	0.0 (0.0)
Benign proliferative breast disease	81.5 (14.0)	4.2 (1.2)	26.4 (7.8)	3.0 (1.2)	3.8 (1.2)	4.0 (0.6)	2.3 (1.4)	0.5 (0.3)
Ductal carcinoma in situ	84.0 (14.9)	46.6 (16.7)	33.6 (7.9)	13.3 (6.7)	12.7 (3.7)	16.7 (1.7)	8.5 (6.9)	0.7 (0.3)
Infiltrating ductal carcinoma	103.7 (3.9)	77.0 (5.0)	39.1 (4.7)	16.7 (8.8)	22.1 (4.1)	21.7 (4.4)	16.3 (4.9)	0.7 (0.3)

Values are mean (standard error of mean).