Fig 1: Normal localization of DNAH9 in the mutants. Anti-ARL13B (green, middle) and anti-DNAH9 (red, right) coimmunostaining was performed. DNAH9 is distally localized in the ciliary axoneme of the motile cilia in the upper airway. The nuclei were stained using Hoechst (blue). Scale bars, 5 µm.