Figure 4. Low-dose radiation reduces breast metastasis to the lungs.

(A) Schematic plan of LDR irradiation in mice models (n = 5 each group). GFP-tagged metastatic MDA-MB231 LM2 cells were injected through the tail vein. (B) Representative images and (C) quantification of the surface metastatic foci in the lungs of LDR-exposed mice. Error bars represent the mean ± S.D. of triplicate samples. *p < 0.05, and **p < 0.01.