10304
The release of DOX and PTX from PLA - V6K2 was slower than that of PLA - EG , and the release rate was relatively constant with time .
 DOX, PTX, PLA, PLA
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 DOX, PTX, PLA, PLA