28736
Here we show that BMP signaling via Smad1 / 5 / 8 requires cGMP - dependent protein kinase isotype I ( PKGI ) to maintain PASMCs in a differentiated , low - proliferative state .
 Chemical: cGMP
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: cGMP