21065
Body burdens of the studied metals were generally below health based reference values , but several individuals had blood Pb levels above the reference point for possible nephrotoxic and developmental neurotoxic effects .
 Chemical: Pb
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: Pb