J. Al-Hashimi, A.B. et al. 2009. Extraction and partial Purification of ipopolysaccaride (LPS) from E. coli O157:H7 ioslate. Journal of Biotechnology Research Center. 3, 1 (Jan. 2009), 10–14. DOI:https://doi.org/10.24126/jobrc.2009.3.1.34.