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Effects of exposure to PM2.5 on estrous cycles
| Filtered aira | PM2.5a | |
|---|---|---|
| Cycle length (days) | 4.3 ± 0.1 | 4.6 ± 0.1 |
| % with abnormal cyclesb | 0 | 35 |
| % days with leukocytic cytologyc | 39.2 ± 1.4 | 33.0 ± 2.3 |
| % days with cornified cytology | 28.1 ± 1.3 | 32.8 ± 3.4 |
aN = 20/group
bNot having 4 or 5 day cycles, P = 0.008, Fisher’s exact test
cP = 0.027, 2-way ANOVA
