A chimaeric animal model for confined placental mosaicism

R M James, J D West

Research output: Contribution to journalArticlepeer-review


The reason for chromosome mosaicism being sometimes confined to only part of the conceptus is unknown. To address this problem, we produced tetraploid<-->diploid chimaeric mouse conceptuses. At 12 1/2 days, no tetraploid cells were detected in the fetus. They rarely contributed to other derivatives of the primitive ectoderm lineage but were commonly found in the primitive endoderm and trophectoderm lineages. This provides a useful animal model of human confined placental mosaicism and suggests that the primitive endoderm (hypoblast) lineage should be included in future studies of human mosaic conceptuses.

Original languageEnglish
Pages (from-to)603-4
Number of pages2
JournalHuman Genetics
Issue number5
Publication statusPublished - May 1994


  • Aneuploidy
  • Animals
  • Chimera
  • Chromosome Aberrations
  • Chromosome Disorders
  • Disease Models, Animal
  • Female
  • Mice
  • Mosaicism
  • Placenta
  • Pregnancy


Dive into the research topics of 'A chimaeric animal model for confined placental mosaicism'. Together they form a unique fingerprint.

Cite this