Group Percent of graft cells that co-labeled for these markers (mean% ± SD) Nestin MAP2 GFAP KI67 Injection 74% (± 38) 19% (± 40) 0% 18% (± 17) Injection+oral 56% (± 43) 12% (± 20) 0% 18% (± 11) Oral 87% 0% 0% 23% Control 48% (± 50) 0% 0% 9% (± 8)

Table 2: Graft cell differentiation.