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Jason had slept in,and after a hurried shower was rushing out the door to school when his mother stopped him and told him to wear a hat to cover his wet hair.Jason asked why and his mother replied,"It's cold outside and if you don't,you'll catch a cold." What was Jason's mother implying?
Cytokines
Small proteins important in cell signaling that are released by cells and affect the behavior of other cells, often involved in immune responses.
Clonal Selection
A theory in immunology that explains how antigens selectively bind to specific receptors on immune cells, leading to the activation and proliferation of these cells.
Inflammatory Chemicals
Substances produced by the body in response to injury or infection, causing redness, heat, swelling, and pain as part of the immune response.
Lymphatic Vessels
Part of the lymphatic system, these vessels transport lymph, a fluid containing white blood cells and waste products, back into the bloodstream.
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