passages.id: split_4_test_2535_passage
passages.type: progene_text
passages.text: PPARgamma is activated by a wide variety of ligands such as fatty acids , the anti - diabetic thiazolidinediones ( TZDs ) , and also by certain prostaglandins of which 15-deoxy-Delta(12,14)-PGJ2 ( PGJ2 ) .