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Tolman showed that rats can learn about their environment without reinforcement. His research illustrated the difference between
Macrophages
A type of white blood cell part of the immune system, responsible for detecting, engulfing, and destroying pathogens and dead cells.
Null Cells
Lymphocytes that lack surface markers distinctive of T or B cells, often associated with natural killer cell activity.
Variable Regions
Parts of antibodies that differ from one antibody to another, enabling them to bind to a specific antigen.
T-cell Receptors
These receptors on the surface of T-cells recognize and bind to antigens presented by other cells, initiating an immune response.
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