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infuse – v. to cause (something, such as a quality) to be added or introduced into a person or thing
antibody – n. a substance produced by the body to fight disease
participant – n. a person who is involved in an activity or event; a person who participates in an activity or event (often + in)
antiretroviral therapy - n. medicines used to control and suppress HIV, the virus that causes AIDS
harbor – v. to hold or contain (something)
