Figure 2: Sections of: (a) adenocarcinoma of the bowel; (b) serous ovarian cancer; (c) squamous cell cancer of the cervix; (d) endometrial cancer; (e) small cell lung cancer; (f) hepatocellular carcinoma; (g) transitional cell carcinoma of the bladder; and (h) Barrett’s mucosa with adenocarcinoma stained with monoclonal anti-nfP2X7 antibody. Field widths 0.5 mm.