Table 2.

Radial alveolar counts (RAC) at d15 and d30: RAC at d15 were significantly lower in Dex-treated and higher in RA-treated pups while Dex + RA animals were similar to controls. At d30, RAC continued to be significantly lower in Dex-treated pups but RA alone increases were lost demonstrating reversal upon stopping treatment. Values are expressed mean ± SE. *p < 0.05 vs. saline-treated animals. ^†p < 0.01 vs. CSO-treated animals. ^‡p < 0.01 vs. d15 RA animals.

Treatment Group	Day 15	Day 30
Control (n = 3–4)	8.5 ± 0.2	9.0 ± 0.3
Saline (n = 3–4)	8.7 ± 0.3	8.8 ± 0.3
Cottonseed oil (CSO) (n = 3–4)	8.5 ± 0.2	8.8 ± 0.1
Retinoic Acid (RA) (n = 3–4)	11.6 ± 0.2†	8.9 ± 0.1‡
Dexamethasone (Dex) (n = 3–4)	6.6 ± 0.2*	7.3 ± 0.4*
Dex + RA (n = 3–4)	8.9 ± 0.3	8.5 ± 0.2