21365
Morphine presented only slight effects on brain and liver mitochondria , and the combination cocaine + morphine had similar effects to cocaine alone , except for a greater decrease in state - 3 respiration .
 Chemical: Morphine; Chemical: cocaine; Chemical: morphine; Chemical: cocaine
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: Morphine; Chemical: cocaine; Chemical: morphine; Chemical: cocaine