4552
In addition , the effect of the specific endothelin type A receptor antagonist FR 139317 on FK 506 - induced hypertension in rats was studied .
 FR 139317, FK 506, hypertension
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 FR 139317, FK 506, hypertension