著者名,論文名,雑誌名,ISSN,出版者名,出版日付,巻,号,ページ,URL,URL(DOI) "Thomas, E. Spencer",Biology of progesterone action during pregnancy recognition and maintenance of pregnancy,Frontiers in Bioscience,1093-9946,IMR Press,2002,7,1-3,d1879,https://cir.nii.ac.jp/crid/1363107368514745984,https://doi.org/10.2741/spencer