10564
Transient transfection experiments with expression vectors for two of the isoforms demonstrated that the 32.2-kDa protein is an activator of transcription of granulocyte colony-stimulating factor receptor promoter , while the 14.3-kDa protein is not.
 granulocyte colony-stimulating factor receptor promoter, 14.3-kDa protein, 32.2-kDa protein
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 granulocyte colony-stimulating factor receptor promoter, 14.3-kDa protein, 32.2-kDa protein