New cryopreservation research published in Human Reproduction indicates advantages in vitrification over slow-freezing on the later ability of ovarian follicles to grow in vitro. The paper, by oncofertility researchers, Alison Ting, Richard Yeoman, Maralee Lawson, and Mary Zelinski at Oregon National Primate Research Center is entitled, β€œIn vitro development of secondary follicles from cryopreserved rhesus macaque ovarian tissue after slow-rate freeze or vitrification.” Read a blog on the research or the entire article.