2067
DDS , such as polymeric nanoparticles , micelles , dendrimers and lipid - based formulations enable physico - chemical properties of cytotoxic agents to be improved and oral bioavailability to be enhanced .
 None
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 None