4893
A variety of cytokines and growth factors act through an induction of gene expression mediated by a family of latent transcription factors called STAT (signal transducers and activators of transcription) proteins .
 protein: STAT (signal transducers and activators of transcription) proteins; protein: cytokines; protein: latent transcription factors; protein: STAT; protein: growth factors
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: STAT (signal transducers and activators of transcription) proteins, cytokines, latent transcription factors, STAT, growth factors 
Answer:
 protein: STAT (signal transducers and activators of transcription) proteins; protein: cytokines; protein: latent transcription factors; protein: STAT; protein: growth factors