Myoblast differentiation (IMAGE) Kumamoto University Caption Image of myoblasts differentiating into myofibers. Myoblasts can differentiate into two different types, slow-twitch (type 1) or fast-twitch (type 2) muscle fibers, each with distinct metabolic properties. Credit Prof. Mitsuyoshi Nakao Usage Restrictions These images may only be used in conjunction with the accompanying release, or stories written about the work described in the release with reference to the original work. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.