What are stem cells?

What are stem cells?



a. Cells that can be found under the epidermis of an adult
b. Specialised cells used to assist in reproduction
c. Unspecialised cells that can be induced to become cells with specialised function
d. Cells removed from the brain stem of a fetus


Answer: c. Stem cells are undifferentiated cells that can be found in the human embryo and umbilical cord blood. In adults, stem cells are found in bone marrow (where they can become various blood cells) and in brain and muscle cells (where they are used to replace injured cells).


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