Figure 1From: Association between arsenic exposure and plasma cholinesterase activity: a population based study in Bangladesh Dose-related relationship of water arsenic with hair and nail arsenic concentrations. Relationship between drinking water arsenic and the arsenic in hair (A) or in nails (B) of the study subjects. Arsenic concentrations in water, hair and nails were used after log transformation. r s and p- values are from Spearman correlation coefficient test.Back to article page