BioMed Research International / 2012 / Article / Fig 3

Research Article

Five Hundred Years of Mercury Exposure and Adaptation

Figure 3

Box plots showing the variance (standard deviation; STD) of hydrogen isotope ratios along the length of the hair in Huancavelica residents (1) and controls (0). The statistically significant reduced variance in Hg exposed individuals ( 𝑃 = 0 . 0 1 ) signifies deranged biologic rhythms with significant reduction of variance in the system’s control by the autonomic nervous system.