It is called THERAPEUTIC INDEX. Therapeutic index is the comparison of the amount of a particular drug that causes the desired therapeutic effects and the amount that causes toxicity. The index can be low or high. A drug with a low therapeutic index will require only a small increase in dose to produce toxic effects in users.
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Within the bone marrow, all blood cells originate from a single type of unspecialized cell called a stem cell. When a stem cell divides, it first becomes an immature red blood cell, white blood cell, or platelet-producing cell.
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I am not sure if this helps you....
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It starts with 2 chromosomes and ends with 2 identical cells.
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because It loses leaves so that it can keep all of the nutrients and water to the ruts and steam
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It can always grow more leaves
49 Kelvin = -224.15 Celsius
I believe this is the answer.