Abnormal gene expression in cloned mice derived from embryonic stem cell and cumulus cell nuclei. Humpherys D, Eggan K, Akutsu H, et al. Abnormal gene expression in cloned mice derived from embryonic stem cell and cumulus cell nuclei. Proc Natl Acad Sci U S A. 2002;99(20):12889-94. doi:10.1073/pnas.192433399 Read more