“…Sections from one block from each case were stained immunohistochemically using a streptavidin–biotin method, 12 with microwave antigen retrieval using pH 6 citrate buffer 13 before application of the primary antibody. The primary antibodies used were: QBEND‐10 (CD34, Novocastra, Peterborough, UK), and bcl‐2 (Dako, Ely, UK).…”