The substance made by white blood cells to counteract poisons produced by pathogens is called antibodies.

Here's why:

* Antibodies are specialized proteins produced by B lymphocytes (a type of white blood cell) that specifically bind to and neutralize harmful substances like toxins (poisons) produced by bacteria, viruses, or other pathogens.

* This process is called the immune response and is a crucial part of the body's defense system.

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