10132
Furthermore , we demonstrate that transcription from the MMTV 5 ' LTR is highly active in the absence of Stat5a , a transcription factor that had been shown previously to be required for transcription from the MMTV LTR .
 MMTV 5 ' LTR, Stat5a, MMTV LTR
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 MMTV 5 ' LTR, Stat5a, MMTV LTR