Figure 3.

Tracheal diameter measured with ultrasound at the age of 8 weeks. Comparison “A”: prenatal vitamin D deficiency (Pre-Def/Post-Def) resulted in narrowing of the trachea compared with prenatally sufficient (Pre-Suff/Post-Suff) mice (P < 0.0001). Comparison “B”: postnatal vitamin D supplementation (Pre-Def/Post-Suff) did not improve tracheal diameter in prenatally deficient mice (P = 0.146). Comparison “C”: similarly, postnatal vitamin D deficiency alone (Pre-Suff/Post-Def) did not affect tracheal diameter with measures similar to their littermates with postnatal sufficiency (Pre-Suff/Post-Suff) (P = 0.697). Results are expressed as mean (±SEM).