3696
Furthermore , suppression of NF - kappaB activation decreased the transcript levels and BMP - 2 - induced phosphorylation of Smad1 / 5 / 8 , critical downstream targets of BMP - 2 signaling in PC cells .
 PC cells
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Anatomy 
Text: {0} 
Answer:
 PC cells