Table 1.

Statistics of chromatin accessibility data in OpenAnnotate

Species	Protocol	Source	Number of samples	Number of biosample types	Number of tissues	Number of biological systems
Homo sapiens	DNase-seq	ENCODE	871	199	47	11
	ATAC-seq	ENCODE	89	29	24	9
	ATAC-seq	ATACdb	1493	310	44	12
Mus musculus	DNase-seq	ENCODE	144	37	18	10
	ATAC-seq	ENCODE	132	66	12	7