1681
By primer extension analysis to discriminate two transcripts, we found that the levels of PAFR transcript 1 ( leukocyte-type ), but not PAFR transcript 2 ( tissue-type ), are upregulated by PAF as well as by 12-O-tetradecanoylphorbol-13-acetate ( TPA ) in the human stomach cancer cell line ( JR-St cells ) which expresses both functional PAFR transcript 1 and PAFR transcript 2 endogenously.
 ( protein: PAF, None) , ( cell line: JR-St cells, None) , ( protein: PAFR, None) , ( protein: PAFR, None) , ( RNA: PAFR transcript 2, None) , ( RNA: PAFR transcript 1, None) , ( RNA: PAFR transcript 1, None) , ( RNA: PAFR transcript 2, None) , ( protein: PAFR, None) , ( protein: PAFR, None) , ( cell line: human stomach cancer cell line, 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: PAF, None) , ( cell line: JR-St cells, None) , ( protein: PAFR, None) , ( protein: PAFR, None) , ( RNA: PAFR transcript 2, None) , ( RNA: PAFR transcript 1, None) , ( RNA: PAFR transcript 1, None) , ( RNA: PAFR transcript 2, None) , ( protein: PAFR, None) , ( protein: PAFR, None) , ( cell line: human stomach cancer cell line, None) 