Examlex
Which of the following statements is true about public relations?
Phagocytosis
The process by which certain living cells called phagocytes engulf or ingest other cells or particles, important for immune defense.
Chemical Barriers
Substances used to prevent or reduce the entry or growth of harmful organisms, as in contraception or infection control.
Cytotoxic T Cells
A type of white blood cell that plays a key role in the immune system by directly killing infected or cancerous cells.
Active Against Viruses
Refers to substances or agents that have the ability to inhibit the replication or effect of viruses, contributing to antiviral treatment.
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