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11 Cards in this Set

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pathogen
any agent that causes disease
white blood cell
blood cell that protects the body against disease
antigen
signal molecule that produces an immune response
antibody
molecule the body makes to protect itself from disease
immunity
resistance to a specific disease
contagious
can be spread from one person to another
antibiotic
chemical made by a living organism that kills bacteria
AIDS
viral disease that attacks a person's immune system
tumor
mass or lump of cells
benign tumor
mass of cells that is usually harmless
malignant tumor
harmful mass of cells that can spread throughout the body