492
During the night , the mean 12 - hour heart rate on placebo and timolol gellan were both significantly less than on timolol solution ; the difference between solution and gellan treatments was statistically significant ( P = . 01 ) .
 Chemical: timolol; Chemical: timolol
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: timolol; Chemical: timolol