3167
OBJECTIVES : This study sought to assess the cellular and histologic basis of irreversible pulmonary hypertension ( PHT ) in the clinical setting of congenital heart disease ( CHD ) .
 cellular, pulmonary, heart
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Anatomy 
Text: {0} 
Answer:
 cellular, pulmonary, heart