(a)

(b)

(c)

(d)

Figure 2: MRI sagittal sequential T2 views of the knee. Pretreatment MRI scans ((a) (sequential image: 5/20) and (c) (6/20)) show a tear (arrow) within the posterior horn of the medial meniscus. Posttreatment MRI scans at three months ((b) (5/20) and (d) (6/20)) indicate the healed meniscus (triangle) that has been repaired by ASCs mixture-based treatment.