TABLE 1.

Determination of indoxyl formation by changes in the relative fluorescence of cultures of recombinant E. coli strains

Strain	Optical density at 650 nm	Relative change in fluorescence (min−1)
E. coli(pSK/BEC)	2.53	0.34
E. coli(pSKBEC/PP:3.3)	2.54	0.64/2.29
E. coli(pBluescript SK−)	2.82	0