1681
Expression of cyclooxygenase ( COX ) - 2 plays a key role in tumorigenesis and development and peroxisome proliferator - activated receptor gamma ( PPARgamma ) has been implicated in the control of COX - 2 expression in some tissues .
 Anatomy: tissues
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Anatomy 
Text: {0} 
Answer:
 Anatomy: tissues