Many body parts can now be replaced either by transplants (parts taken from other persons or animal) or by implants (artificial parts. It is commonly includes the heart, lungs, liver, kidney and the cornea of the eye. Heart, lungs, liver are taken from dead persons mostly who had given through their wills. Kidney may be donated from living donors. Sometimes the original heart is not removed but just connected to the donor’s heart, giving the patient a “Double heart”.