3847
The dose - dependent targeting and anticancer effect of the MNP - g - HPG - MTX nanoparticles were evaluated , and the results showed that depending on the amount of conjugated MTX and the concentration of the incubated nanoparticles , the uptake of MNP - g - HPG - MTX nanoparticles by human head and neck cancer ( KB ) cells can be eight times or more higher than those by 3T3 fibroblasts and RAW macrophages .
 Chemical: MTX; Chemical: MTX; 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; Chemical: MTX; Chemical: MTX