Transcriptional levels of BMI1 polycomb ring finger oncogene (BMI1), One-eyed pinhead protein (OEP), Pre-mRNA processing factor 19 (Prp19) and Ovary-expressed homeobox protein in Atlantic cod embryos at 1, 2 and 6 dpf (n = 3), as well as in larvae at day 1 and 6 (n = 1). At the blastula and gastrula stages, cells from about 100 eggs were used; yielding approximately 100,000 cells in cells at day 2 and many more cells at day 6. 10 larvae were pooled together for each of the larvae day 1 and day 6 samples. Mean normalized expression (MNE) – whole line. Raw Ct – dotted line.