Table 1 Histopathological image distribution of BreaKHis divided by magnification and class before data augmentation.

Class	Subclass	Magnification factors				Total
Class	Subclass	40X	100X	200X	400X	Total
Benign	A	114	113	111	106	444
	F	253	260	264	237	1014
	TA	109	121	108	115	453
	PT	149	150	140	130	569
Malignant	DC	864	903	896	788	3451
	LC	156	170	163	137	626
	MC	205	222	196	169	792
	PC	145	142	135	138	560
Total		1995	2081	2013	1820	7909

BreaKHis has a large amount images and various classes. The dataset provides 7,909 histopathological images collected from 82 anonymous patients divided into benign and malignant tumors and eight sub-classes tumors that consist of four magnification factors: 40X, 100X, 200X, and 400X.

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