Philadelphia, Pa: WB Saunders: 2003:3-38 Compare and contrast normal cell division (on the right) versus nondisjunction (on the left). Note the potential formation of monosomy or trisomy.

For Trisomy 21, the chance of a positive result being ... your placenta that's circulating in your blood, so it contains cells from both you and your pregnancy. These fragments are free-floating ...

Recognized for discovery of cell-free fetal DNA in maternal blood and creation of noninvasive prenatal testing (NIPT), used by as many as 50% of pregnant women in the US to ...

Recognition of the clinical features of Trisomy 13 syndrome, a common autosomal trisomy, provides the basis for diagnostic testing and counseling of families. This article provides a systematic ...

Dec. 18, 2024 — Scientists have generated human stem cell models which contain notochord -- a tissue in the developing embryo that acts like a navigation system, directing cells where to build ...

Dec. 17, 2024 — Researchers developed a fully open-source biomolecular structure prediction model that achieves state-of-the-art performance, at the level of AlpahFold3, in an effort to ...

In most multicellular organisms, meiosis is restricted to germ cells that are set aside in early development. The germ cells reside in specialized environments provided by the gonads, or sex organs.

Bone marrow flow cytometry strongly suggested hepatosplenic γδ T-cell lymphoma and infiltration of bone marrow samples by pathological T-lymphocytes confirmed the diagnosis. Despite chemotherapy the ...

You've got a lot to consider when searching for the best cell phone plan, whether it's what kind of coverage you can expect or what kind of perks come with your plan. But the main question I wind ...

Population-scale 5′ scRNA-seq identified 21 cell types and thousands of alternatively spliced genes per cell type. Credit: Nature Genetics (2024). DOI: 10.1038/s41588-024-02019-8 ...

The most common type of Down syndrome is trisomy 21, which accounts for 95% of all ... and mosaicism (when there is a mixture of two types of cells). Not every child with Down syndrome will ...