19824
The nanoparticles obtained presented a particle size of 340nm with a positive surface charge of 44mV and the capability of forming lipoplexes with DNA plasmids was stated .
 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