Table 1.

IC₅₀ of Irradiation in non-transfected human breast cell lines

Cell line	Cell type	IC50
		Est. (SE)	P value1
MCF10A	Normal	1.54 (0.116)	-
MDA-MB-231	ER-PR- HER2-	1.93 (0.191)	0.04
HCC1806	ER-PR- HER2-	1.68 (0.128)	0.398
MDA-MB-468	ER-PR- HER2-	2.06 (0.155)	0.02
HCC1954	ER-PR- HER2+	2.60 (0.189)	<0.001
SKBR3	ER-PR- HER2+	2.08 (0.156)	0.001

¹The p value is based on the comparisons relative to MCF10A group for each cell line.