| Labelled toxin A concentration(μg/ml) | Surface-associated TAFU (on ice) | Internalised TAFU after 2 h (at 37°C) | Internalised TAFU after 5 h (at 37°C) |
| 0 | 0 | 0 | 0 |
| 2 | 22404 (±24139) | 13610 (±5194) | 27253 (±916) |
| 5 | 70351 (±22798)* | 23843 (±5256) | 53014 (±9253) |
| 10 | 171618 (±57308)* | 41448 (±4002) | 75273 (±13462) |
*p<0.05.