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The inner cell mass (ICM) cells of blastocyst-stage early human embryos can be removed and cultured. These cells can be grown in the lab indefinitely. Various growth factors cause these cells to
develop into a variety of differentiated cells, such as muscle or nerve cells.
A young mother has become the first in the world to get a new part of her body made from her own stem cells.
The woman in Spain received a new windpipe -- grown in a lab.
British doctors who were involved in the revolutionary transplant say it heralds a new era in medicine.
Our Health Correspondent Thomas Moore explains.
A robotic fish developed by scientists from Essex University is put through its paces in a special tank at the London Aquarium. It works via sensors and has autonomous navigational control.