Stem cells are undiffrentiated cells that can undergo unlimited division to form other cells. This means stem cells are capable of dividing and renewing themselves, unlike other body cells.
They are also unspecialised which can potentially become any type of cells.
They differentiate to form specialised functioning body cells such as skin cells, red blood cells, nerve cells, and skeletal muscle cells under certain condition.
They remain in the body until they get a signal to diffrentiate or gradually change into the desired cell type. This occurs when specific genes in the stem cell are turned on.This process helps cells to specialise so they can carry out different function.
There are two types of stem cells:
1. the embryonic stem cells.
2.An adult stem cells.
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SPM possible Question:
1. Explain briefly the potential of stem cell research to man. [ 5 marks]
*Try the video to understand better.
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