Eustachian Tube Growth and Development: Anatomy/Function. Protocol Description. This study measures Eustachian tube function and facial growth over time in three groups of children: one with recurrent ear infections, one with chronic middle ear fluid, and one with little past history of otitis media.
Causes of Kartagener syndrome. Kartagener syndrome is caused by a mutation in the DNAI1 gene, which makes a cellular protein required for normal functioning cilia (cilia line the respiratory tract) and sperm motility.
As, for example, sickle cell anemia, which is a serious disease occurs due to mutation from single base substitution. A point mutation of the Î²- globin gene in codon 6 results in the substitution of glutamic acid by valinethereby causing sickle cell anemia. Î²-globin is an important component of haemoglobin (HbA).