a total of 40 fecal and environmental isolates , including 26 escherichia coli strains , 9 members of the genus klebsiella , and 5 members of the genus enterobacter , were tested by enzyme assay for their endogenous and induced levels of lysine decarboxylase and ornithine decarboxylase when grown in moeller decarboxylase medium .
C0029282
ornithine decarboxylase
C0007054
decarboxylase