Blood lead level
Blood lead level (BLL) is a measure of the amount of lead in the blood. Lead is a toxic heavy metal and can cause neurological damage, especially among children, at any detectable level.
Blood lead level (BLL) is a measure of the amount of lead in the blood. Lead is a toxic heavy metal and can cause neurological damage, especially among children, at any detectable level.
Blood lead level (BLL) is a measure of the amount of lead in the blood. Lead is a toxic heavy metal and can cause neurological damage, especially among children, at any detectable level.
Source: Wikipedia "Blood lead level" · CC BY-SA 4.0
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