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TLC analysis of starch and IPS digested by cell extracts overnight. Lane S, glucose (G), maltose (M), and maltooligosaccharide (M3 through M6) standards; lanes 1 to 4, starch digested by S. mutans LT11, the amy mutant, E. coli JM83, and E. coli JM83(pOB219), respectively; lane 5, IPS digested by E. coli JM83(pOB219).
