||P.225 left column 2nd paragraph: "What is PRP? Platelet-rich plasma is just that, it is a volume of autologous [transplantation of organs, tissues or even proteins from one part of the body to another in the same individual] plasma that has a platelet concentration above baseline. Normal platelet counts in blood range between 150,000/µl and 350,000/µl and average about 200,000/µl. Because the scientific proof of bone and soft tissue healing enhancement has been shown using PRP with 1,000,000 platelets/µl, it is this concentration of platelets in a 5-ml volume of plasma which is the working definition of PRP today. Lesser concentrations cannot be relied upon to enhance wound healing, and greater concentrations have not yet been shown to further enhance wound healing (Fig. 1)."