The implied warranties of merchantability and fitness shall not be applicable to a contract for the sale, procurement, processing, distribution or use of human tissues such as corneas, bones or organs, whole blood, plasma, blood products or blood derivatives. Such human tissues, whole blood, plasma, blood products or blood derivatives shall not be considered commodities subject to sale or barter and the transplanting, injection, transfusion or other transfer of such substances into the human body shall be considered a medical service.