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Quantitative analysis of two-colour immunofluorescence image analysis of periapical granulomas. The number of immunoreactive endothelial cells (ECs) for vascular endothelial (VE)-cadherin or inducible nitric oxide synthase (iNOS) antibodies was divided by that of 4,6-diamine-2-phenylindole-positive ECs. (a) iNOS- and VE-cadherin-positive ECs of eight patients. (b) Mean percentages of immunoreactive ECs in eight patients. *P < 0·05.
