27548
Furthermore , corpus lutea did not form in Smad4 ( fl / fl ) ; Cyp19 - Cre female mice , indicating that SMAD4 was crucial for GCs terminal differentiation .
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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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