Participants | Pyknotic cells | Karyorrhectic cells | Karyolytic cells |
Not exposed | 4.12 ± 1.44 | 3.46 ± 2.07 | 2.06 ± 1.32 |
Indirectly exposed | 7.65 ± 2.65* | 12.54 ± 3.66* | 10.76 ± 3.12* |
Directly exposed | 34.54 ± 4.66* | 27.76 ± 6.77* | 19.76 ± 3.79* |