Answer the following statement(s) true (T) or false (F)
1. Pathogens must invade the body's cells to cause symptoms.
2. Pathogens can enter the body through penetration of the skin, by inhalation, or by ingestion.
3. Antibodies are produced by macrophages.
4. The two main types of lymphocytes are T cells and B cells.
5. Killer T cells destroy body cells in order to kill the pathogen inside.
1. FALSE
2. TRUE
3. FALSE
4. TRUE
5. TRUE
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Fill in the blank(s) with correct word
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