3846
The HPG - graft layer confers the magnetic nanoparticles with good dispersibility and stability in aqueous medium and macrophage - evasive property while the MTX acts as a chemotherapeutic drug as well as a tumor targeting ligand .
 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