7298
The purpose of this study was to develop a mucoadhesive stimuli - sensitive drug delivery system for nasal administration of zidovudine ( AZT ) .
 zidovudine, AZT
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 zidovudine, AZT