| Group |
Duration of exposure |
| Control |
No hypoxic exposure |
| Group I; 2 hr. exposure |
Animals were given HH exposure for 2 hour |
| Group I; 4 hr. exposure |
Animals were given HH exposure for 4 hour |
| Group III; 8 hr. exposure |
Animals were given HH exposure for 8 hour |
| Group IV; 12 hr. exposure |
Animals were given HH exposure for 12 hour |
| Group V; 16 hr. exposure |
Animals were given HH exposure for 16 hour |
| Group VI; 24 hr. exposure |
Animals were given HH exposure for 24 hour |
| Group VII; 48 hr. exposure |
Animals were given HH exposure for 48 hour |
