2303
A transcription factor exclusion assay was used to show that the PCF1 mutation affects two distinct stages in transcription : one prior to and one after stable complex formation ; and that these effects are mediated by a component of the stable complex .
 GENE: PCF1 mutation
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: PCF1 mutation 
Answer:
 GENE: PCF1 mutation