Immunogen sequence: PHLTKECLVA LRCGRECTNL KAALRQEFSN LEEILEYQNT TFFGGTCISM IDYLLWPWFE RLDVYGILDC VSHTPALRLW ISAMKWDPTV CALLMDKSIF QGFLNLYFQN NPNAFDFGLC; Positive Samples: Rat testis, Mouse pancreas. The omega class glutathione transferases (GST; EC 2.5.1