The implied warranties of merchantability and fitness are not applicable to a contract for the sale, procurement, processing, distribution, or use of human tissues including, but not limited to, corneas, bones or organs, whole blood, plasma, blood products, or blood derivatives. Human tissue, whole blood, plasma, blood products, and blood derivatives must not be considered commodities subject to sale or barter, and the transplanting, injection, transfusion, or other transfer of these substances into the human body are considered a medical service.