Fig. 1From: Development and characterisation of acquired radioresistant breast cancer cell linesConfirmation of radioresistance using colony formation and SRB assays. a Colony formation assays comparing MCF-7 RR, ZR-751 RR and MDA-MB-231 RR cell lines with their respective parental cell lines. b SRB proliferation assays comparing MCF-7 RR, ZR-751 RR and MDA-MB-231 RR with their respective parental cell lines (2-way ANOVA with Holm-Sidak’s multiple comparisons test; data expressed as mean ± SEM, n = 3, ****p ≤ 0.0001; ***p ≤ 0.001; *p ≤ 0.05)Back to article page