The neural differentiation from dental pulp stem cells was obtained as reported in our previous study5 (link). Briefly, cells were cultured for 6 days in vitro (DIV) in the basic medium (DMEM), subsequently the medium was added with the following neural induction cocktail: 0.5 mM Isobutyl Methyl Xanthine (IBMX), 20 ng/ml human Epidermal Growth Factor (hEGF) 1 mM dibutyrylcAMP (dbcAMP), 10 ng/ml Nerve Growth Factor (NGF) and 10 ng/ml Brain-Derived Neurotrophic Factor (BDNF), 40 ng/ml basic Fibroblastic Growth Factor (bFGF), (all reagents were purchased from Invitrogen, Milan, Italy). Obtained neuronal differentiation, cells were grown in culture for 15 days in DMEM/FBS added with 10 µM retinoic acid21 .
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