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| Strain (relevant genotype) | Slope,* Miller units/min | cro-/cro+ |
|---|---|---|
| NC415 (ΔOLcro-) | 120 | 1.62 |
| NC414 (ΔOLcro+) | 74 | |
| NC417 (OL+cro- | 147 | 1.65 |
| NC416 (OL+cro+) | 89 |
β-Galactosidase activities were assayed as described in Materials and Methods.
Slope of the linear part of the induction curves shown are from Fig. 4.
