Fig. 1From: A novel genetic variant in DNAI2 detected by custom gene panel in a newborn with Primary Ciliary Dyskinesia: case reporta Ultrastructure of a normal cilium from nasal epithelium of a healthy subject showing nine peripheral pairs of microtubules with outer and inner dynein arms clearly visible (100.000 x). b Representative transmission electron micrograph of a cross-sectioned cilium from the patient demonstrating the absence of outer dynein arms (100.000x)Back to article page