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(a)
| Test area | Colonies/well | Mean ± SD | Colony-formation ratio (%) |
|---|---|---|---|
| Control (MEM10 medium) | 38, 43, 42, 40 | 40.8 ± 2.2 | 100 |
| Negative control material | |||
| Plastic sheet, toluene resisting | 36, 40, 41, 41 | 39.5 ± 2.4 | 96.8 |
| Positive control material B | |||
| Polyurethane film containing 0.25% ZDBC | 0, 0, 0, 0 | 0.0 ± 0.0 | 0.0 |
| Test article | |||
| Fish collagen | 38, 40, 36, 39 | 38.3 ± 1.7 | 93.9 |
