How do we know that just a few stem cells are the ultimate source of all new plant cells? By creating genetic differences between cells of the same plant, scientists are able to track how the ...

If stem cells were able to multiply uncontrollably, this would lead to uncontrolled growth, as in the case of cancer. WOX5 is an important signaling molecule that regulates stem cells in the meristem.

Mesenchymal stem cells are the source of new bone, cartilage, and connective tissue cells. Neuronal stem cells produce a variety of nervous system tissue, mostly during early embryonic development ...

outer cell mass and inner cell mass. Embryonic stem cells are derived from the inner cell mass of the blastocyst. Embryonic stem cells in culture are capable of self-renewal without ...

As these cells die off, they are replaced by healthy new hepatocytes. The source of those new cells had never been identified, Nusse says. Stem cells, which replenish their own populations and ...

The best source is the five-day-old embryo. Adult stem cells will differentiate into a narrower range of cell types. Bone marrow transplants are an example of adult stem cell transplant.