The present invention provides a method for treating a subject animal having a damaged tissue. In one aspect of the invention, the method includes the steps of harvesting a tissue sample from a tissue source； growing a plurality of cells from the tissue sample in a culture system； obtaining a sample of the grown cells from the culture system； and introducing the sample of the grown cells into the subject animal for aiding in repair of the damaged tissue； wherein the introducing step includes introducing the sample of the grown cells into a region of the subject animal not including the damaged tissue.
