1679
Platelet-activating factor ( PAF ) positively auto-regulates the expression of human PAF receptor transcript 1 ( leukocyte-type ) through NF-kappa B .
 protein: PAF; protein: human PAF receptor transcript 1; protein: NF-kappa B; protein: Platelet-activating factor
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, human PAF receptor transcript 1, NF-kappa B, Platelet-activating factor 
Answer:
 protein: PAF; protein: human PAF receptor transcript 1; protein: NF-kappa B; protein: Platelet-activating factor