Fig. 1From: Association of the angiotensin I converting enzyme (ACE) gene polymorphisms with recurrent aphthous stomatitis in the Czech population: case–control studyLinkage disequilibrium (LD) maps for 5 polymorphisms in the angiotensin I converting enzyme (ACE) gene. Strong LD is illustrated with red colour. LD blocks are marked by a black triangle (identified using the Solid spine of the LD method)Back to article page