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Tony's Mother Wants Him to Learn to Play with Other

question 28

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Tony's mother wants him to learn to play with other children. She begins by offering him a quarter whenever he plays with other children nearby, even if he plays by himself. Later, she gives him a quarter only when he plays on the same playground equipment other children are playing on. Finally, she gives him a quarter only if he actually plays with the other children. Tony's mother is demonstrating how to use


Definitions:

Antibodies

Proteins produced by the immune system in response to antigens, which help to identify and neutralize foreign objects like bacteria and viruses.

Macrophages

Large white blood cells that are an essential part of the immune system, responsible for detecting, engulfing, and destroying pathogens and dead cells.

Antigens

Foreign substances in the body that trigger an immune response.

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