24138
Efforts to understand the physical nature of complex coacervates are important for developing robust adhesives , injectable materials , or novel drug delivery vehicles for biomedical applications ; however , their internal fluidity necessitates the use of in situ characterization strategies of their local dynamic properties , capabilities not offered by conventional techniques such as X - ray scattering , microscopy , or bulk rheological measurements .
 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