3848
As a result , the MNP - g - HPG - MTX nanoparticles are capable of killing ~ 50 % of the KB cells while at the same time exhibiting low cytotoxicity towards 3T3 fibroblasts and RAW macrophages .
 Chemical: MTX
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: MTX