The NT2 cell line, which is a human embryonic carcinoma cell line, differentiates into post-mitotic neuron-like cells following treatment with all trans retinoic acid (ATRA) [16,17] and into non-neural epithelial cell lineages following exposure to bone morphogenetic protein 2 (BMP-2) [18,19]. The gene discussed is BMP2; the disease is embryonal carcinoma.