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DSC heating trace of Kdo2-Lipid A (1 mM) in DPBS (pH 7.2). The relatively sharp peak is consistent with the purity and chemical homogeneity of Kdo2-Lipid A. The principal phase transition temperature (Tm) was determined to be 36.4°C. The minor peak at 33.2°C that appears as a shoulder of the main peak may be due to a pretransition of the alkyl chains.
