1470
Therefore , we assessed the role of FANCD2 , a critical component of the Fanconi anemia pathway , in FA - induced toxicity in human lymphoblast cell models of FANCD2 deficiency ( PD20 cells ) and FANCD2 sufficiency ( PD20 - D2 cells ) .
 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