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Classification of lngA+ ETEC isolates for biofilm formation.
| OD600 nmvalue | Biofilm forming | |
|---|---|---|
| OD ≤ ODc | <0.129 | Non |
| ODc < OD ≤ 2 ODc | 0.129–0.258 | Weak |
| 2 × ODc< OD ≤ 4 × ODc | 0.259–0.516 | Moderate |
| 4 × ODc< OD | ≥0.517 | Strong |
ODc, Optical density cut off value: average OD of negative control.
