8354
On the other hand , at 4W - PP , NL PAH mice showed normal fractional shortening , but lactating PAH mice exhibited significant decreases in cardiac contractility compared with NL PAH mice .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None