英语翻译Lead1 The multitude of sources and exposures to lead mak

英语翻译
Lead
1 The multitude of sources and exposures to lead make it more than an air contaminant.
2 Primary exposure occurs from direct inhalation,and secondary exposure comes from various routes to produce an ingestion of lead.
3 Furthermore,lead affects human health at the subcellular,cellular,and organ system levels.
4 Some specific effects of higher blood levels of lead include anevmia,cognitive deficits,peripheral neuropathies,and encephalopathy symptoms.