6625
Understanding the molecular mechanisms of FasL regulation could be very useful in elucidating how these diseases develop and in identifying potential therapeutic targets .
 protein: FasL
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
 Entities: FasL 
Answer:
 protein: FasL