7006
We investigated the involvement of signal transducers and activators of transcription (STAT) factors in this phenomenon and reported the specific, time-dependent, activation of STAT1 protein starting at day 0/1 of cultivation and maximally expressed at day 5.
 protein: signal transducers and activators of transcription (STAT) factors; protein: STAT1
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: signal transducers and activators of transcription (STAT) factors, STAT1 
Answer:
 protein: signal transducers and activators of transcription (STAT) factors; protein: STAT1