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The TGF - beta signaling pathway is involved with multiple processes in the mammalian ovary , including primordial follicle formation , granulosa cell ( GC ) proliferation , follicle atresia , ovulation , and feedback regulation between the pituitary and ovary .
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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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