This document discusses using blood-derived stem cell treatment for superficial digital flexor tendon injuries in horses. The treatment involves collecting a blood sample from a horse's lower limbs, isolating the nucleated blood cell fraction, incubating the cells to stimulate growth, and then injecting the grown cells into the injured tendon site. A study found that after 3-6 months, horses that received the stem cell treatment showed excellent regeneration of new tendon tissue compared to their condition at the time of diagnosis based on ultrasound images. The treatment can quickly repair tendon injuries by regenerating new, high quality tissue.