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. 2017 Jan 10;17:44. doi: 10.1186/s12885-016-3026-2

Fig. 1.

Fig. 1

Immunohistochemical staining of MRE11 a & b, RAD50 (c & d) and NBS1 (e & f) (20× magnification). a Only complete absence of nuclear staining for MRE11 in tumor cells (⋆) was considered as negative staining. Adjacent normal tissue served as positive internal control (▶). Examples of undetectable RAD50 (c) and NBS1 (e) in tumor cells. Any nuclear staining of MRE11 (b), RAD50 (d) or NBS1 (f) was considered as positive