NAYERI FASAEI, B.; ZAHRAEI SALEHI, T.; NASERLI, S.; SAEEDINIA, A. R.; BEHROOZIKHAH, A. M. Site-Directed Mutagenesis in Brucella Abortus S19 by Overlap Extension PCR-Based Procedure. J Hellenic Vet Med Soc 2018, 68, 273-278.