Formalin-fixed tissues were routinely processed into paraffin wax blocks and sections cut for Haemotoxylin and Eosin (H&E) staining and immunohistochemistry. Immunohistochemistry was carried out as described previously (Creedon et al., 2016 (link)). Primary antibodies used were CD31 at 1:800 (Abcam, ab28364), ERG (Dako, IR659, ready to use, 200 μl per slide), p53 at 1:2000 (Leica BioSystems, NCL-L-p53-CM5p), PDGFR-β at 1:100 (CST, 3169S), and VE-cadherin at 1:4000 (Abcam, ab33168).
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