These are specialized cells that can survive in harsh conditions. what are they called?

If this is wrong im very sry, but i belive the answer is white blood cells

Explanation:

These are the cells that fight off infections and bactieria that is not sopposed to be in the human body, or any other living creature.

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identify the dna change shown in the diagram and explain how that change can result in the increased genetic diversity often seen among siblings.identify the dna change shown in the diagram and explain how that change can result in the increased genetic diversity often seen among siblings.v