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We investigated the impact of a soluble cobalt compound , CoCl ( 2 ) . 6H ( 2 ) O , on the BEAS - 2B lung epithelial cell line , as well as its impact on metal homeostasis .
 Chemical: cobalt; Chemical: CoCl ( 2 ) . 6H ( 2 ) O
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: cobalt; Chemical: CoCl ( 2 ) . 6H ( 2 ) O