27449
We , therefore , anticipate that PVO nanoparticles have great potential as novel antioxidant therapeutics and drug delivery systems for ROS - associated inflammatory diseases .
 Chemical: PVO
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: PVO 
Answer:
 Chemical: PVO