Tetracycline inhibition zone diameters | ||||||
Sample no. (n = 10) | Tetracycline disc (30 µg) | Ch/VitC | Ch/VitC/FeEDTA | Ch/VitC/FeEDTA/T | Ch/VitC/FeEDTA/T/HA | Ch/VitC/T/HA |
Average ± standard deviation | 26.44 ± 0.28 | 0 | 0 | 23.67 ± 0.55 | 20.09 ± 1.63 | 22.80 ± 0.64 |