4433
Gel mobility shift and immunoprecipitation analyses revealed that in addition to activating STAT3 ( signal transducer and activator of transcription-3 ) and STAT5 , IL-2 induced tyrosine and serine phosphorylation of STAT1 alpha , which formed IFN-gamma-activated sequence-binding complexes by itself and with STAT3 .
 protein: STAT3; protein: IFN-gamma-activated sequence-binding complexes; protein: signal transducer and activator of transcription-3; protein: STAT1 alpha; protein: STAT3; protein: IL-2; protein: STAT5
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: STAT3, IFN-gamma-activated sequence-binding complexes, signal transducer and activator of transcription-3, STAT1 alpha, STAT3, IL-2, STAT5 
Answer:
 protein: STAT3; protein: IFN-gamma-activated sequence-binding complexes; protein: signal transducer and activator of transcription-3; protein: STAT1 alpha; protein: STAT3; protein: IL-2; protein: STAT5