An Unexpected Discovery After Miscarriage The story began when the woman went to the hospital after suffering a miscarriage ...

Photograph of a karyotype - the collection of chromosomes within each cell of an organism - from a male mouse engineered by Johns Hopkins Medicine researchers to model Down syndrome in a human. The ...

Researchers for the first time have successfully fused two chromosomes in mice and shown that the new karyotype can be transmitted to offspring. The researchers used a strategy that involved haploid ...