There was a tendency that as the levels of saliva lead increased, the positive rates of detection in blood lead and urine lead increased.
随着唾液铅排出量的增加，血铅、尿铅的阳性检出率有增高趋势。
2
In extreme cases of extended lead exposure, doctors use drugs called chelating agents, which bind to the lead and pull it out of the body through urine.
在持续的铅暴露的极端情况，医生用一种叫做螯合剂的药物来治疗。
3
To observe the relationship between lead content in blood and urine and acute tetraethyl lead poisoning.