Respuesta :

rehgraj

Answer:

Explanation:

stem cells are manipulated to specialize into specific types of cells, such as heart muscle cells, blood cells or nerve cells. The specialized cells can then be implanted into a person. For example, if the person has heart disease, the cells could be injected into the heart muscle.

per12bet

Answer:

certain genes in the cell have to become activated to cause special enzymes to form

Explanation:

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