8000
Knockdown of PHF6 impairs cell proliferation and arrests cells at G ( 2 ) / M phase , which is accompanied by an increased level of phosphorylated H2AX , indicating that PHF6 deficiency leads to the accumulation of DNA damage in the cell .
 None
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities:  
Answer:
 None