2251
We propose V gamma 9V delta 2 T cells show a strong potential to serve as harbingers of possible adverse immune effects of n - BP therapy , particularly in those patients already having a compromised immune system as they may be most vulnerable to the development of conditions such as BAONJ .
 n - BP
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 n - BP