| Pb | lead |
| VDD | vitamin D deficiency |
| 25(OH)D | 25-Hydroxyvitamin D |
| 1,25(OH)2D | 1, 25-Dihydroxyvitamin D |
| VDR | Vitamin D receptor |
| CYP27A1 | 25-Hydroxylase |
| CYP27B1 | 1α-Hydroxylase |
| PTH | Parathyroid hormone |
| PND | Postnatal day |
| BPbL | Blood lead level |
| LC-MS/MS | Liquid chromatography-tandem mass spectrometry |
| ICP-OES | Inductively coupled plasma-optical emission spectrometer |
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