613
Overall , it appears that prenatal exposure to androgen - based synthetic progestin exerted a masculinizing and / or defeminizing influence on human behavioral development , whereas prenatal exposure to natural progesterone and progesterone - based synthetic progestin had a feminizing and / or demasculinizing influence , particularly among female subjects .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
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