4760
Because the locus most robustly associated with AAM is in / near LIN28B , the goal of this study was to investigate how the Lin28 pathway might modulate pubertal timing by examining expression of Lin28b , and its homologue , Lin28a , across the pubertal transition in female mice .
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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:
 None