脐血铅浓度与新生儿端粒长度的相关性(2)
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[Key words] Umbilical cord blood；Lead；Neonate；Telomere length
Telomere，the outer most ends of the chromosomes，is essential for chromosomal stability and integrity.Telomere
consists of repeats of DNA sequences，and it’s function is to stabilize chromosome to prevent end-to-end fusion between chromosomes，degradation， rearrangement，and chromosome loss.As the normal somatic cell undergoes mitosis constantly，so telomere length shortens correspondingly. When telomere reaches a critical length，it can prevent the further division of the cell ......
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