TABLE 1.

The number of images per class in BreaKHis.

		Magnification factor
Class	Subclass	40×	100×	200×	400×	Total
Benign	Adenosis	114	113	111	106	444
	Fibroadenoma	253	260	264	237	1014
	Phyllodes tumor	149	150	140	130	569
	Tubular adenoma	109	121	108	115	453
Malignant	Ductal carcinoma	864	903	896	788	3451
	Lobular carcinoma	156	170	163	137	626
	Mucinous carcinoma	205	222	196	169	792
	Papillary carcinoma	145	142	135	138	560
Total		1995	2081	2013	1820	7909