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What are blood stem cells?
Stem cells are undifferentiated cells able to distinguish into other types of specialized cells.
The stem cells of the bone marrow create the differentiated blood cells. According to stimulus from specific growth factors the stem cells are turned into red blood cells, leukocytes and megakaryocytes (cells that form platelets). Research shows that stem cells of the bone marrow can also distinguish into muscle, nervous and hepatic cells.
Irritability If a bright torch of light is flashed across your eyes, you close your eyes instinctively. The bright light acts as a stimulus (pl, stimuli) and closing your eyes
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