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SDS-PAGE comparison of relative amounts of LPS I and LPS II in strains CE166, CE166α, and wild-type CE3. SDS extracts of washed cell pellets were loaded to give roughly equal amounts of total LPS. The band that migrates faster than LPS II comigrates with purified lipid A. Lanes: 1, CE3; 2, CE166; 3, CE166α.
