Overexpression of Kynurenine 3-Monooxygenase Correlates with Cancer Malignancy and Predicts Poor Prognosis in Canine Mammary Gland Tumors

Figure 3

Immunohistochemical analysis of KMO protein expression in CMTs. (a) CMT stained without antibody against KMO as a negative control, which did not show immunoreactivity in the cytoplasm. (b) CMT with weak KMO cytoplasmic staining (1+). (c) CMT with moderate KMO cytoplasmic staining (2+). (d) CMT with strong KMO cytoplasmic staining (3+). Scale bar = 50.00 μm.

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