4539
These HPV16 E6 / E7 cDNAs were cloned under the SV40 enhancer / promoter and the MMTV LTR to examine the activities of ras - collaborative transformation and induction of cellular DNA synthesis , both of which depend on the E7 gene product .
 E6, E7, SV40 enhancer / promoter, MMTV LTR, ras, E7 gene
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 E6, E7, SV40 enhancer / promoter, MMTV LTR, ras, E7 gene