20179
In vitro and in vivo evaluation of superparamagnetic iron oxide nanoparticles coated by bisphosphonates : The effects of electrical charge and molecule length .
 Chemical: iron oxide; Chemical: bisphosphonates
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: iron oxide; Chemical: bisphosphonates