The present invention provides a method of treating or preventing a disease or condition in a patient comprising intravenously administering a therapeutically effective amount of mesenchymal stem cells to the patient, wherein the disease or condition is osteoarthritis, rheumatoid arthritis, multiple sclerosis, stroke, ulcerative colitis, psoriasis, Hashimoto's thyroiditis, atopic dermatitis, allergic rhinitis, chronic obstructive pulmonary disease with bronchial asthma or hearing loss.
