11502
We have investigated the role of NGF in regulating gene transcription in PC12 and INS - 1 cells , in order to define if there are NGF - regulated genes per se .
 NGF, NGF
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 NGF, NGF