11797
We hypothesized that exposure to acrolein , an unsaturated aldehyde and mucosal irritant found in cigarette smoke , diesel exhaust , and power plant emissions , would increase cardiopulmonary sensitivity to hypoxia , particularly in hypertensive rats .
 Chemical: acrolein; Chemical: aldehyde
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: acrolein; Chemical: aldehyde