Uncategorized Cytological studies of human meiosis: sex-specific differences in recombination originate at, or prior to, establishment of double-strand breaks Igenomix Variable maternal methylation overlapping the nc886/vtRNA2-1 locus is locked between hypermethylated repeats and is frequently altered in cancer Preimplantation genetic screening using fluorescence in situ hybridization in patients with repetitive implantation failure and advanced maternal age