Figure 2

Immunohistochemical analysis of kidney tumor samples. Eighty-four kidney tumor samples, spotted on a frozen TMA were stained for expression of TNW and TNC. The area of the section stained for TNW or TNC was quantified and the samples were classified in four categories (absent, low, moderate and high) as described in Materials and Methods. The number of tumors classified in each category for TNW and TNC is shown as pie charts (A). A double-entry table details how many tumors show each combination of TNW/TNC expression (B). Top panel in C shows normal kidney tissues stained for TNW (left) and TNC (right). Representative pictures of tumors of each category (absent; low; moderate; high) are shown for TNW (C, left panel) with the corresponding tumor area stained for TNC in parallel (C, right panel). Every picture is acquired at the same magnification (Scale bar = 200 μm).