14358
Most serum biochemical indexes of rats had apparently changed compared with those in the negative control , and gender difference significantly affected most indexes of subchronic toxicity except for the ratios of organ to body weight and histopathological observation .
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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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