6178
Developmental neurotoxicity ( DNT ) and many forms of reproductive toxicity ( RT ) often manifest themselves in functional deficits that are not necessarily based on cell death , but rather on minor changes relating to cell differentiation or communication .
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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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