1757
We previously showed that LD ( 50 ) values , based on in ovo exposures to DLCs , were significantly correlated with in vitro EC ( 50 ) values obtained with a luciferase reporter gene ( LRG ) assay that measures AHR1 - mediated induction of cytochrome P4501A in COS - 7 cells transfected with avian AHR1 constructs .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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