Table 2: The frequency of polychromatic erythrocytes (PE) in the relation with erythrocytes normochromic (NE) in rats (R) treated whit benzopyrene.
| Frequency of erythrocytes polychromatics ± d. e. | |||||||
| Week | 0 | 1 | 2 | 3 | 4 | 5 | 6 |
| R-1 | *21.13 ± 0.26 | *10.13 ± 0.23 | *5.10 ± 0.14 | *4.5 ± 0.08 | *3.5 ± 0.15 | *3.0 ± 0.13 | *2.5 ± 0.16 |
| R-2 | *19.5 ± 0.28 | *10.8 ± 0.46 | *6.8 ± 0.17 | *5.0 ± 0.42 | *4.4 ± 0.38 | *3.8 ± 0.07 | *3.0 ± 0.22 |
| R-3 | *20.0 ± 0.48 | *9.3 ± 0.43 | *7.7 ± 0.52 | *5.16 ± 0.11 | *4.16 ± 0.21 | *3.5 ± 0.52 | *2.17 ± 0.31 |
| R-4 | *21.0 ± 0.12 | *10.0 ± 0.19 | *6.5 ± 0.44 | *4.83 ± 0.61 | *3.83 ± 0.56 | *2.5 ± 0.41 | *2.83 ± 0.52 |
| R-5 | *21.3 ± 0.57 | *12.0 ± 0.43 | *8.3 ± 0.19 | *6.5 ± 0.24 | *4.5 ± 0.34 | *2.3 ± 0.14 | *2.5 ± 0.33 |
| R-6 | *20.14 ± 0.05 | *9.1 ± 0.37 | *7.33 ± 0.61 | *5.33 ± 0.33 | *4.36 ± 0.42 | *3.33 ± 0.64 | *3.12 ± 0.26 |
| R-7 | *22.5 ± 0.57 | *15.0 ± 0.23 | *9.3 ± 0.15 | *6.9 ± 0.29 | *5.5 ± 0.32 | *3.2 ± 0.12 | *3.5 ± 0.14 |
| R-8 | *20.9 ± 0.67 | *11.4 ± 0.41 | *10.2 ± 0.18 | *7.4 ± 0.28 | *5.6 ± 0.74 | *4.4 ± 0.54 | *3.5 ± 0.28 |
*Statistically significant difference with respect to week 0, ANOVA and Student T test, p = < 0.005; The frequency of erythrocytes was counted in 3000 cells per rat.