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. 2014 Sep 11;9(9):e106708. doi: 10.1371/journal.pone.0106708

Figure 1. The O7-antigen synthesis was blocked in the △wzx deletion mutant.

Figure 1

A) The presence of O-antigen was determined by SDS-PAGE separation of LPS preparations followed by silver staining. Lane 1, wild-type S. Choleraesuis strain ATCC10708; Lane 2, △wzx mutant strain; Lane 3, the △wzx complemented strain. The O-antigen latter is indicated. B) Agglutination was examined with somatic O7 antiserum and pictures were taken within 5 min. Spot 1, wild-type S. Choleraesuis strain ATCC10708; Spot 2, the △wzx mutant strain; Spot 3, the △wzx complemented strain.