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. Author manuscript; available in PMC: 2015 Apr 25.
Published in final edited form as: Radiat Res. 2015 Jan 7;183(1):124–132. doi: 10.1667/RR13878.1

Figure 2. Dose-dependent decrease in lung epithelial colony formation following ex vivo X-ray irradiation.

Figure 2

(A) Isolated and fractionated primary epithelial cells were irradiated with X-rays ex vivo. (B) Colony forming efficiency was calculated as the percentage (± SEM) of seeded cells that give rise to colonies after 14 days in culture. Graph was plotted as the percent of colony forming efficiency normalized to the control. Significance to unirradiated controls indicated by: * (p ≤ 0.05), *** (p ≤ 0.001), **** (p ≤ 0.0001).