You are asked to design a delivery system for local treatment of breast cancer; the system will be implanted at the site of the solid tumor and slowly release chemotherapy to the local tissue. Will...

You are asked to design a delivery system for local treatment of breast cancer; the system will be implanted at the site of the solid tumor and slowly release chemotherapy to the local tissue. Will you use a degradable or a nondegradable polymer? Will you use a matrix system or microspheres? Make a list of the advantages and disadvantages of each for this particular application.