Research challenge: what is the best non-invasive test of oocyte/embryo competence?

This issue of MHR reveals how the basic science of oogenesis and embryogenesis is converging with the development of new analytical techniques that are potentially able to help solve this problem, ranging from high-throughput screening of gene expression in cumulus cells through genomic RNA profiling to metabolic and chromosomal assessment of the preimplantation embryo.