2206
Anesthesia was induced by droperidol 0 . 2 mg . kg - 1 , fentanyl 50 micrograms , thiamylal 150 - 250 mg , and succinylcholine 1 mg . kg - 1 , and maintained with nitrous oxide and O2 ( 67 : 33 ) supplemented with repeated i . v . doses of fentanyl ( within 15 micrograms . kg - 1 ) .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 None