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. 2017 Oct 2;7:12492. doi: 10.1038/s41598-017-12666-z

Figure 1.

Figure 1

Immunohistochemical staining for mast cell specific tryptase in human IVD tissue (A). The positive control was tissue taken from a human mast cell tumor. Quantification of percent positive cells for tryptase demonstrated significant upregulation of tryptase in human surgical tissue samples compared to autopsy controls (B) (p = 0.0047) (Autopsy N = 7, Surgical N = 6). Black scale bar = 200 µm, Red scale bar = 50 µm.