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Currently Mac OS X runs on more personal computers worldwide than other operating systems.
Antigen-presenting Cells
Specialized immune cells that capture antigens and present them on their surface to T-cells, initiating an immune response.
Helper T Cells
White blood cells that play a critical role in the immune system by activating other immune cells to fight off infections.
Cytokines
Small proteins released by cells that have a specific effect on the interactions and communications between cells, often involved in immune responses.
Antigens
Substances that are recognized by the immune system and can elicit an immune response, often foreign proteins or polysaccharides found on pathogens.
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