643
This function of PAF was observed at nanomolar concentrations of the ligand, starting at 30 min after stimulation.
 protein: PAF
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: PAF 
Answer:
 protein: PAF