The process of heating a liquid to kill much of the bacteria in milk and other liquids is called ___.
White blood cells called ___ are important in specific defenses against pathogens.
Forms of antigens that give you active immunity to a disease without getting the disease first are called ___.
What is the job of the Centers for Disease Control and Prevention (CDC) in the United States?
Which one of the following could be described as a minute piece of genetic material that multiplies in host cells?
What body system is attacked when a person is infected with HIV?
Which one of the following is a characteristic of cancer cells?
What is an overly strong reaction of the immune system to a foreign substance called?
Joseph Lister recognized the relationship between the infection rate following surgery and ___.
Molecules that are foreign to your body are called ___.
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