Fig. 3From: Endogenous H2S producing enzymes are involved in apoptosis induction in clear cell renal cell carcinomaImmunohistological staining of MPST in ccRCC tumors according to a grade of tumor and determination of apoptosis by TUNNEL assay. Staining with primary antibody against MPST was slightly decreased in higher grades. In samples from all grades, apoptosis was not detectable. NC – negative control, where primary antibody was omitted. Scale bar represents 100 μmBack to article page