Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) RAVETCH JV,Structure of the human immunoglobulin μ locus : Characterization of embryonic and rearranged J and D genes,Cell,,,1981,27,,583-591,https://cir.nii.ac.jp/crid/1573950401078793472,https://doi.org/10.1016/0092-8674(81)90400-1