H&E staining of representative samples from Day 14, 21 and 28 for each cell group. A) Low density FPMSCs (FPMSCs LD) B) High density FPMSCs (FPMSCs HD), C) Low density CCs (CC LD), D) High density CCs (CC HD) and E) Co-culture of FPMSCs and CCs (FPMSCs:CC). Areas of high proliferation are visible in B, D and E at the day 28 timepoint, showing increased cell proliferation in the high seeding density groups (Black arrows). Scale = 500 μm.