Figure 1.

The photomicrograph of representative prostate archival specimens stained with H&E. (A-D) shows areas of BPH, high grade PIN, moderately-differentiated and poorly-differentiated prostate adenocarcinoma (PCa) and residual normal glands (indicated as open arrows). Immunostaining for endothelial cell specific marker (anti-CD34, E-H) at magnification × 200 shows the extent of anti-CD34 stained organizing endothelial cell in areas of PIN as well as intraductal venule cross-sections in PCa (indicated as stealth arrows). No CD34 staining was seen in BPH area.