The lungs are already in close contact with the circulatory system. Our concern is whether the drug will reach the circulation and won’t be reduced along the way. The lungs already have a high rate of blood flow. Since delivery to the lungs is rather complex we will need a way for our drug to be enhanced without losing its ability or a reduction in concentration. One way is through a C and R uptake pathway. This will make our drug be amplified in a sense and delivery of our drug will be improved. We will need to enter the vascular tissue and a way to do this is through vascular permeability in which blood vessels permit for the flow of molecules and in this instance, it will be our drug.
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