FIG. 5.
13C-NMR spectra of purified cyclic β-1,2-glucans from B. abortus. (A) B. abortus S19. (B) B. abortus S19 treated with alkali. (C) B. abortus Cgm19. Chemical shifts are expressed relative to external 1,4-dioxane (δ 67.4 ppm).
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