Growing Tendon (IMAGE) Case Western Reserve University Caption After 35 days, mesenchymal stem cells seeded on woven collagen biotextile have differentiated into tendon cells and populated the scaffold. Cell are elongated and run the same direction as the collagen fibers, as indicated by the green fluorescent actin fibers of cells. The differentiation is attained without growth factors, solely by the topographical cues provided by the biotextile. Credit Mousa Younesi Usage Restrictions Please give proper credit 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.