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The effect of L - dopa was correlated with a decrease in blood and brain ammonia , an increase in brain dopamine , and an increase in renal excretion of ammonia and urea .
 Chemical: L - dopa; Chemical: ammonia; Chemical: dopamine; Chemical: ammonia; Chemical: urea
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: L - dopa; Chemical: ammonia; Chemical: dopamine; Chemical: ammonia; Chemical: urea