Answer the following question given this paragraph: The body's first line of defense consists of different types of barriers that keep most pathogens out of the body. Pathogens are disease-causing agents, such as bacteria and viruses. These and other types of pathogens are described in Figure below . Regardless of the type of pathogen, however, the first line of defense is always the same. Q: What is the term for disease-causing agents, such as bacteria and viruses? A:
Pick from: - spores - parasites - vaccines - pathogens
pathogens