Kidney diseases usually result from damage to cells involved in the filtration process. Scientists are studying the use of a specific type of adult stem cells, found bone marrow, to treat kidney diseases. Previous studies suggest that proteins released by these stem cells help kid cells grow and also inhibit cell death. Scientists are developing methods to culture these stem cells from the bone marrow of the patient, so they can extract protein and later utilize them for treatment.

What is a likely disadvantage of this method of treatment?

A) The adult stem cells are difficult to isolate and culture.

B) The treatment would be rejected by the patient's immune system.

C) The treatment will not provide a complete cure for the disease.

D) The adult stem cells quickly differentiate and lose their regenerative power