18681
Pulmonary artery smooth muscle cells ( PASMCs ) express inducible nitric oxide synthase ( iNOS ) , and while iNOS expression increases during late gestation , little is known about how cyclic stretch impacts this pathway .
 Chemical: nitric oxide
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: nitric oxide