Figure 3: Sections of: (a) gastrointestinal stromal tumour; (b) endometrial stromal tumour; (c) pituitary cancer; (d) mesothelioma; (e) choriocarcinoma; (f) Hodgkin’s lymphoma; (g) thyroid papillary; and (h) mouse B16/F10 melanoma stained with monoclonal anti-nfP2X7 antibody. Field widths 0.5 mm (a-g) and 0.12 mm (h).