Fig. 1From: Genome-wide epigenetic analyses in Japanese immigrant plantation workers with Parkinson’s disease and exposure to organochlorines reveal possible involvement of glial genes and pathways involved in neurotoxicityPCA and hierarchical clustering for plantation work DML (10+ years vs 0 years). a, b Principal component graphs as coordinates in 3-D Euclidian space, depicting the clear separation of the high and low exposure groups. DML loci with p < 0.0001 were used, 7 for brain (a) and 123 for blood (b). c, d Hierarchical clustering of the DML for high and low exposure to plantation work in brain and blood. For brain (c), 94 DML loci with p < 0.001 were used, for blood (d), 123 DML loci with p < 0.0001 were usedBack to article page