Assessment of blood vessel density in human IDC with varying α3 expression (AMC sample set). (A) Representative examples of anti-vWF immunostaining among tumor samples of varying α3 score, as indicated. Arrowheads point to examples of blood vessels. Scale bar, 250 μM. (B) Graph depicts quantification of blood vessel area (i.e., anti-vWF staining above threshold) among tumor samples of varying α3 expression score, as indicated. Data are average +/- s.e.m.; sample size is indicated for each bar on the graph.