Figure 5
From: Aging and trace elements in human coronal tooth dentine
Results of principal component analysis in human coronal tooth dentine. (a) Analysis of trace elements in age group I (<30 years), (b) Analysis of trace elements in age group II (30–50 years), (c) Analysis of trace elements in age group III (>50 years). This figure has been generated using SPSS 22.0 (SPSS software Inc., Chicago, IL).
