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Extract administration at all the doses produced significant increase in body weight , sperm count , motility , and viability along with serum testosterone , luteinizing hormone , and follicle - stimulating hormone concentrations .
 Chemical: testosterone
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: testosterone