If all of the cells are normal, the embryo is considered normal. But if there’s a mix of normal and abnormal cells, it is classified as mosaic — something that was only possible to discern in ...

Certain developmental signals shape not only the human embryo but also play a significant role in maintaining our genetic ...

Mosaic Down syndrome is a variant of Down syndrome. Down syndrome is a congenital (present at birth) genetic condition that ...

Could two pieces of a stone mosaic ever be identical? Of course, the answer is no--and each stone’s variation subtly contributes value to the finished work. Why should your cells be any different?

(A) Hypothetical pedigree of Segmental neurofibromitosis type 1, and (below) molecular analysis showing somatic mosaicism. The three-generation pedigree illustrates the occurrence of a sporadic ...