Gene expression can be regulated at the level of mRNA. Although small interfering RNA and microRNA are common examples of this type of regulation, what other changes to mRNA can prevent or alter its translation

trachea, alveoli, lung capillaries, arteries

sorry to break it to ya but no one can answer your question it's just

jk but i am serious about the part that most people cant answer it beacuse you did not mention the section you are talking about. but it would if you added some detail and were a bit more specific.