Delayed pregnancy in mice

✍ Scribed by Enzmann, E. V. ;Saphir, N. R. ;Pincus, Gregory

• Publisher: John Wiley and Sons
• Year: 1932
• Tongue: English
• Weight: 786 KB
• Volume: 54
• Category: Article
• ISSN: 0003-276X
• DOI: 10.1002/ar.1090540304

✦ Synopsis

Delayed pregnancy in mice is associated with the presence of suckling young. The simple state of affairs is that impregnated lactating females deliver their young not a t the expected term, but from one to sixteen days later. Our first problem was to repeat the observations of other investigators ( Pinard, '05 ; Daniel, '10 ; King, '13 ; Kirkham, '16, '18 ; Mirskaia and Crew, '30) in order to determine any possible correlation between the number of suckling young and the degree of delay. Secondly, we have attempted to ascertain the sequence of intra-uterine events responsible for the delay. Finally, our examination of living material has permitted the observation of the behavior of mouse embryos at the critical stage of implantation.