1. Department of Biology, University of Rome II “Tor Vergata Rome”, Rome, Italy
2. Department of Comparative Morphology and Biochemistry, University of Camerino, Camerino, Italy
3. Department of Biochemistry, Faculty of Sciences, University of Dschang, Dschang, Cameroon
4. Department of Animal Production, Faculty of Agronomy and Agricultural Sciences, University of Dschang, Dschang, Cameroon
5. Department of Chemical Materials, Environmental Engineering, University of Rome I “Sapienza”, Rome, Italy