S100B and hydrops fetalis: As for the glial differentiation, HF and SD NCSCs express p75(CD271), neurotrophins 3 and 4 (NT-3 and NT-4), myelin basic protein (MBP), glial fibrillary acidic protein (GFAP), SOX10, nerve growth factor (NGF), early growth response 2 (EGR2), and myelin protein zero(MPZ) at the mRNA level and S100β both at the mRNA and protein levels.