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Mean concentrations of NGF, BDNF and GDNF secreted in the culture supernatant of different medium groups on day 9 by enzyme-linked immunosorbent assay.
Groups A, B and C represent 30%, 20%, 0% CSF groups, respectively. aP < 0.05 vs. group C. Results were expressed as mean ± SD, n = 8 (independent-samples t-test).
NGF: Nerve growth factor; BDNF: brain-derived neurotrophic factor; GDNF: glial cell line-derived neurotrophic factor; CSF: cerebrospinal fluid.
