13599
Ligation of Fas by specific Abs or Fas ligand ( FasL/CD95 ligand ) induces rapid apoptotic cell death in a variety of cell types.
 protein: Fas; protein: FasL/CD95 ligand; protein: specific Abs; protein: Fas ligand; protein: Fas
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: Fas, FasL/CD95 ligand, specific Abs, Fas ligand, Fas 
Answer:
 protein: Fas; protein: FasL/CD95 ligand; protein: specific Abs; protein: Fas ligand; protein: Fas