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The trend of accumulation of the metals in the tissues is blood - Fe > Pb > Zn whereas Cu and Ni levels were not affected ; Liver - Ni > Zn > Fe > Cu > Pb and Testes - Ni > Cu > Pb > Zn > Fe .
 Chemical: Fe; Chemical: Pb; Chemical: Zn; Chemical: Cu; Chemical: Ni; Chemical: Ni; Chemical: Zn; Chemical: Fe; Chemical: Cu; Chemical: Pb; Chemical: Ni; Chemical: Cu; Chemical: Pb; Chemical: Zn; Chemical: Fe
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: Fe; Chemical: Pb; Chemical: Zn; Chemical: Cu; Chemical: Ni; Chemical: Ni; Chemical: Zn; Chemical: Fe; Chemical: Cu; Chemical: Pb; Chemical: Ni; Chemical: Cu; Chemical: Pb; Chemical: Zn; Chemical: Fe