Table 2. Characteristics of placentae from normal-weight fetuses.
| 14.5 dpc | ANOVA | |||
|---|---|---|---|---|
| CBA × Balb/c | CBA × CBA | CBA × DBA | p-value | |
| Placentae (N) | 34 | 35 | 36 | |
| Diameter (mm) | 8.84 ± 0.35 | 8.85 ± 0.14 | 9.17 ± 0.14 | 0.2810 |
| Thickness (mm) | 2.67 ± 0.07 | 2.46 ± 0.04a | 2.63 ± 0.05 | 0.0250 |
| Area (mm2) | 23.97 ± 1.01 | 22.35 ± 0.60 | 23.92 ± 0.69 | 0.1809 |
| Labyrinth (%) | 48.10 ± 1.09a | 54.83 ± 0.96af | 52.44 ± 0.80d | 0.0006 |
| Trophospongium (%) | 28.61 ± 0.61a | 23.46 ± 0.71f | 24.75 ± 0.71d | 0.0012 |
| Maternal decidua (%) | 23.29 ± 0.71 | 21.71 ± 0.83 | 22.81 ± 0.74 | 0.4442 |
| Placental efficiency (fetal/placental weight) | 1.86 ± 0.03 | 2.25 ± 0.14e | 2.447 ± 0.36 | 0.0068 |
| Glycogen-containing cells (% placenta) | 10.00 ± 0.72 | 8.19 ± 0.53c | 12.68 ± 0.98 | 0.0004 |
| 18.5 dpc | ANOVA | |||
| Placentae (N) | 50 | 44 | 46 | |
| Diameter (mm) | 10.38 ± 0.093c | 9.69 ± 0.09f | 9.45 ± 0.15f | <0.0001 |
| Thickness (mm) | 2.72 ± 0.03 | 2.50 ± 0.04e | 2.65 ± 0.04 | 0.0063 |
| Area (mm2) | 26.05 ± 0.40c | 21.58 ± 0.50f | 23.22 ± 0.56f | <0.0001 |
| Labyrinth (%) | 63.51 ± 0.64a | 48.64 ± 2.99af | 65.78 ± 0.97d | <0.0001 |
| Trophospongium (%) | 19.79 ± 0.49 | 16.96 ± 0.52e | 18.82 ± 0.59 | 0.0088 |
| Maternal decidua (%) | 16.66 ± 0.38 | 14.01 ± 0.55e | 15.53 ± 0.68 | 0.0094 |
| Placental efficiency (fetal/placental weight) | 10.00 ± 0.24 | 11.20 ± 0.25e | 10.41 ± 0.26 | 0.0055 |
| Glycogen-containing cells (% placenta) | 9.47 ± 0.16 | 8.60 ± 0.30e | 9.23 ± 0.38 | 0.0077 |
Data are expressed as mean ± SEM. ap < 0.05, bp < 0.01, cp < 0.001 vs (CBA/CaH × DBA/2J) F1; dp < 0.05, ep < 0.01, fp < 0.001 vs (CBA/CaH × Balb/c) F1 by One-way ANOVA with Tukey’s multiple comparison test. For each placentae two parallel sections taken 100 μm apart were analysed.