8174
Vaccination with 6OXY ( Gly ) ( 4 ) - KLH increased drug binding in serum , reduced drug distribution to brain , and blunted analgesia for both oxycodone and hydrocodone .
 Chemical: 6OXY ( Gly ) ( 4 ); Chemical: oxycodone; Chemical: hydrocodone
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: 6OXY ( Gly ) ( 4 ); Chemical: oxycodone; Chemical: hydrocodone