A mother brings her 10-year-old daughter to the pediatrician because the child has been complaining of ear pain two days accompanied by fever, and home remedies are not giving any relief. On examination the physician notes a discharge from the girl's ear. A CT scan shows a swollen mastoid bone He orders antibiotics and an analgesic for the pain What is his diagnosis?

Diseases may arise when proteins fail to fold correctly in their last stages of processing and/or are directed towards the lysosome rather than towards the cell membrane. cystic fibrosis is an example of this type of disease. in cystic fibrosis, a functional ion channel is sent to the lysosome for destruction rather than being sent to the plasma membrane. given this observation, the cellular component that is most likely the cause of the disease is the