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If two events are mutually exclusive and collectively exhaustive,what is the probability that one or the other occurs?
Endocrine Glands
Internal organs that produce hormones and release them into the bloodstream.
Natural Killer Cells
A type of white blood cell that plays a crucial role in the body's immune response by attacking tumors and virally infected cells.
White Blood Cell
Cells of the immune system that are involved in protecting the body against both infectious disease and foreign invaders.
Immune System
The body's defense mechanism against pathogens, comprising various organs, cells, and proteins.
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