Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) SARAH K. HOWLETT and WOLF REIK,Methylation levels of maternal and paternal genomes during preimplantation development,Development,0950-1991,The Company of Biologists,1991-09-01,113,1,119-127,https://cir.nii.ac.jp/crid/1362825894817999360,https://doi.org/10.1242/dev.113.1.119