867
Therefore , the molecular mechanisms of the estrogen action that govern the lactoferrin gene expression differ between mouse and human .
 GENE: lactoferrin gene
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
 Entities: lactoferrin gene 
Answer:
 GENE: lactoferrin gene