delivery application drug ion exchange advantages diffusion dissolution advanatges matrix passive mucosal reservoir microencapsulation design of controlled drug deli polymer controlled ndds disadvanatges ion exchnage resin application of controlled drug disadvantages of controlled dr controll drug system drug delivery polymers conventional marketed mobile application development disadavanatges alzet delievry advanatages interactive implants principle bioadhesion active modulated rate controlling system implantable disadvantages controlled drug pci novel
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