Table 1.

Numbers of FHSRRs

Cell Line	Origin	Number of FHSRRs
		Insulators	Promoters	Strong Enhancers	Weak Enhancers
Gm12878	lymphoblastoid cells	66	19	11	114
H1 ESC	embryonic stem cells	78	535	173	1,146
HepG2	liver carcinoma cells	49	135	78	1,103
HMEC	mammary epithelial cells	49	8	23	146
HSMM	skeletal muscle myoblasts	51	13	17	127
HUVEC	human umbilical vein endothelial cells	47	7	12	73
K562	leukemia cells	78	413	62	1,072
NHEK	epidermal keratinocytes	78	14	28	179
NHLF	lung fibroblasts	88	2	7	80

The nine cell lines studied by Ernst et al.¹⁴ are shown with the corresponding numbers of FHSRRs in the four RR classes.