Histopathological image of the superficial digital flexor tendon. The figures show histopathological specimens stained with hematoxylin & eosin (H&E) using a 20× objective. A) Healthy group: healthy tendon. B) Treated group: tendon treated with the combination of MSCs derived from adipose tissue and platelet concentrate. C) Control group: tendon treated with PBS (the white arrow indicates the presence of a tenocyte and the black arrow indicates the presence of inflammatory cells).