4390
By using 70Z/3-derived pre-B-cell lines either lacking or expressing human CD14 (the LPS receptor ), it was observed that expression of human CD14 imparted responsiveness to LPS but not to OspA or spirochetal lipopeptides (assessed by induction of NF-kappa B and expression of surface immunoglobulin M ).
 ( protein: LPS receptor, None) , ( protein: spirochetal lipopeptides, None) , ( protein: human CD14, None) , ( cell line: 70Z/3-derived pre-B-cell lines, None) , ( protein: surface immunoglobulin M, None) , ( protein: human CD14, None) , ( protein: NF-kappa B, None) , ( protein: OspA, None) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: RNA,cell type,protein,cell line,DNA, Arguments type: . 
Text: {0} 
Answer:
 ( protein: LPS receptor, None) , ( protein: spirochetal lipopeptides, None) , ( protein: human CD14, None) , ( cell line: 70Z/3-derived pre-B-cell lines, None) , ( protein: surface immunoglobulin M, None) , ( protein: human CD14, None) , ( protein: NF-kappa B, None) , ( protein: OspA, None) 