Figure 3: Surgical intervention and tissue harvesting. Collagen cell carrier (A) seeded with PKH26-labelled HUC prior to application onto the rectus abdominis muscle. Construct lying on the abdominal wound (B) prior to its positioning directly between muscle tissue and the associated fascia (C). Implantation site two weeks after surgery (D) with connective tissue formation (white spot). Tissue sample was harvested and divided into two pieces for further processing. Here, implant is not visible macroscopically one week after surgery (E).