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. 2001 Mar;69(3):1967–1970. doi: 10.1128/IAI.69.3.1967-1970.2001

TABLE 1.

Neutralization of Stx

E. coli strain % Stx neutralizeda
Stx1 Stx2c Stx2e
CWG308 0 0 0
CWG308:pJCP-Gb3 99.9 99.2 98.4
CWG308:pJCP-lgtCDE 99.9 98.4 98.4
CWG308:pJCP-lgtCDE/wbnF 99.8 98.4 98.4
CWG308:pJCP-lgtCDE/gne 96.9 87.5 98.4
a

Toxin neutralization was assayed using Vero cells as described in the text. Assays were performed in duplicate with identical results. Untreated toxin extracts had endpoint titers of 656,000, 164,000, and 62,000 CD/ml for Stx1, Stx2c, and Stx2e, respectively.