Examlex
A 148-mL (5-ounce) cup of medium brewed tea contains approximately _____ milligrams of caffeine with a ________ amount of theophylline.
Precursors
Precursors are substances, cells, or chemical compounds that precede and are the origin or source of another substance or biological entity.
Plasma Cells
A type of white blood cell that produces antibodies in response to infections.
Lymphocytes
A type of white blood cell central to the immune system, responsible for antibody production and other defense mechanisms against infection and disease.
Lymph Nodes
Small, bean-shaped structures that are part of the lymphatic system, serving as filters for harmful substances and a site for immune cell activation.
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