1351
Whereas a PR55 beta transcript of about 2 . 3 kb was detected at high levels in the neuroblastoma derived cell line LA - N - 1 , the level of the mRNA was very low in the other human cell lines analyzed .
 PR55 beta transcript
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 PR55 beta transcript