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| Animal groups | Week 1 | Week 2 | Week 3 | Week 4 | Total | GeneChip |
| Intervention (hypoxia) | 6 | 6 | 6 | 6 | 24 | 16* |
| Control (normoxia) | 6 | 6 | 6 | 6 | 24 | 12* |
*Three animals from each control and four animals from each hypoxic subgroup were used for GeneChip analysis. Four animals from each group either pulmonary trunk banded (PTB) or sham at week 5 were used for GeneChip analysis.
