Recently, a human trachea ( a respiratory organ) was produced by using a patient's own stem cells. The benefit of using the patients own cells to produce a trachea instead of receiving one from a donor is that (1) there will be more enzymes produced to help maintain homeostasis in the trachea (2) there will be an increase in the quantity of antibodies that the patient produces in (3) there is less of a chance that the patients immune system will attack the trachea (4) response to the new trachea