625
It was concluded that morphine catalepsy can be elicited by opioid and cholinergic receptors , and the potentiation of morphine induced by nicotine may also be mediated through cholinergic receptor mechanisms .
 Chemical: morphine; Disease: catalepsy; Chemical: morphine; Chemical: nicotine
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Chemical: morphine; Disease: catalepsy; Chemical: morphine; Chemical: nicotine