All analysed HF NCSC and SD NCSC cultures expressed the key NC identity markers, such as SOX9, SOX10, TFAP2A, LNGFR (CD271/P75), NESTIN, SNAIL1, SNAIL2 (SLUG), and TWIST1 (Figures 6(f)–6(m)). This evidence concerns the gene SOX10 and hydrops fetalis.