The Anatomical RecordVolume 120, Issue 1 p. 33-63 Article Equivalent ages in mouse and human embryos† Eileen M. Otis, Eileen M. Otis University of Rochester, Atomic Energy Project, Rochester, New YorkSearch for more papers by this authorRobert Brent, Robert Brent University of Rochester, Atomic Energy Project, Rochester, New YorkSearch for more papers by this author Eileen M. Otis, Eileen M. Otis University of Rochester, Atomic Energy Project, Rochester, New YorkSearch for more papers by this authorRobert Brent, Robert Brent University of Rochester, Atomic Energy Project, Rochester, New YorkSearch for more papers by this author First published: September 1954 https://doi.org/10.1002/ar.1091200104Citations: 147 † Work performed under USAEC Contract Number W-7401-eng.49. AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat Citing Literature Volume120, Issue1September 1954Pages 33-63 RelatedInformation