11861
The focus of this review is injectable , targeted nanoparticle drug delivery carriers highlighting the diversity of nanoparticle materials and structures as well as highlighting current therapeutics and targeting moieties .
 None
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:  
Answer:
 None