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These data indicate that IT morphine induces spastic paraparesis with a concomitant increase in CSF glutamate , which is involved in NMDA receptor activation .
 Chemical: morphine; Disease: spastic paraparesis; Chemical: glutamate; Chemical: NMDA
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: spastic paraparesis; Chemical: glutamate; Chemical: NMDA