29682
With magnetic transport guidance toward the target and subsequent exposure to alternating magnetic field , this DOX - loaded nanogel system possessing combined capabilities of hyperthermia and stimuli - triggered drug release showed superior in vitro cytotoxicity against HeLa cells as compared to the case with only free drug or hyperthermia alone .
 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