Neurosphere

A neurosphere is a culture system composed of free-floating clusters of neural stem cells. Since neural stem cells cannot be studied in vivo, neurospheres provide a method to investigate neural precursor cells in vitro. Putative neural stem cells are suspended in a medium lacking adherent substrates but containing necessary growth factors, such as...
Found on http://en.wikipedia.org/wiki/Neurosphere

neurosphere

(from the article `stem cell`) ...after birth, but some neurons in the olfactory bulbs and in the hippocampus are continually being formed. These neurons arise from neural stem ...
Found on http://www.britannica.com/eb/a-z/n/29
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