Histopathological changes in some tissues of Tigris river fishes, exposed to petroleum hydrocarbons, Baghdad city: Nahla Taleb Mansoor1, Enam Bader Faleh2, Lauya Mohamad Abas1, Kasim Rethaw Asmer1 and Mustafa Jawad Jalil1. Iraqi J. Vet. Med. 2016;40(1):30-37. doi:10.30539/iraqijvm.v40i1.135