13067
Signal transducer and activator of transcription 3 ( Stat3 ) has recently been shown to exist in two alternatively spliced isoforms, a short form, Stat3beta , and a longer form, Stat3alpha , displaying differences in transcriptional activity .
 ( protein: Stat3alpha, None) , ( protein: Stat3, None) , ( protein: Signal transducer and activator of transcription 3, None) , ( protein: Stat3beta, 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: Stat3alpha, None) , ( protein: Stat3, None) , ( protein: Signal transducer and activator of transcription 3, None) , ( protein: Stat3beta, None) 