Messenger ribonucleic acid kinetics in human oocytes—effects of in vitro culture and nuclear maturational status**Supported in part by grants from the American Society for Reproductive Medicine, Birmingham, Alabama; the Sigrid Juselius Foundation, Helsinki, Finland supporting the Fellowship of Oskari Heikinheimo, M.D., Ph.D.; Ortho Pharmaceuticals, Raritan, New Jersey; and Eastern Virginia Medical School, Norfolk, Virginia, to James P. Toner, M.D., Ph.D.