4614
The induction occurs within 1 h from FGF - 2 treatment and is mediated by ERK1 / 2 pathway , which in turn stimulates expression of the early growth response - 1 ( Egr - 1 ) transcription factor .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Anatomy 
Text: {0} 
Answer:
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