The Mitigative Effect Of Selenium Against Hexavalent Chromium Induced- Toxicity In Liver Of Pregnant Wistar Rats - Anfal Fedala; Ounassa Adjroud; Salwa Abid-Essefi; Rim Timoumi (1st International Seminar on Pollution, Health, Environment and Bio-monitoring SIPSEB’21 DECEMBER 27-28, 2021)