Figure 1.
Mass spectra of the bioactive material purified from GBS. (A) Earlier eluting fraction from the Vydac column. The peaks from 700–800 are singly-charged phosphatidylglycerol, free of cardiolipin. The structure is phosphatidylglycerol with fatty acids represented as FA. (B) Later eluting fraction from the Vydac column. The peaks are singly and doubly charged cardiolipin, free of phosphatidylglycerol. The structure is cardiolipin with fatty acids represented as FA. Both fractions were bioactive in the lamb assay.