3823
The contractile element shortening velocity of the cardiac muscle fibers was significantly slower in both groups of barium - treated rats relative to the control groups , irrespective of the anesthetic regimen .
 Chemical: barium
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: barium