... ES cells, scientists can transform them to related important adult cells such as bone, muscle, liver or blood cells. People take human embryonic stem cells from fertilized embryos less than a week old. Those embryos are usually donated in special clinics or extract the cells from an aborted fetus. Scientists" preferred way to obtain cells is by extraction from a 'blastocyst', which is ... that not any embryonic stem cells would need to be transformed into different tissues for transplantation into patients. Whenever tissue transplantation takes place, there is always a risk that the bod...

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