5255
In this study , we have investigated the expression and function of the transcription factor early growth response factor 2 ( Egr2 ) / Krox20 in the developing anterior pituitary .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None