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What characteristic of the universe governs whether the universe is open,closed,or flat?
Natural Killer Cells
A type of white blood cell that plays a crucial role in the body's immune response by attacking and destroying infected or cancerous cells.
Cytotoxic T Cells
Immune system cells that kill cancer cells, cells that are infected (particularly with viruses), or cells that are damaged in other ways.
Antimicrobial Peptides
Soluble molecules that destroy pathogens.
Immune System Components
The cells and molecules, including antibodies, white blood cells, and the complement system, that work together to protect the body from infection and disease.
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