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von Kossa-stained sections of the MCL without (GC) and with (GCF) the osteogenic factors after 4, 8, and 12 weeks and the MCL only without hEBs and osteogenic factors as control. The numbers indicate the implantation time and the scale bars indicate 100 µm for the ×400 magnification and 50 µm for the ×200 magnification.
