Phagocytic cells are an important part of the innate immune system because of their ability to engulf many different pathogens. So the correct answer is b. engulf many different pathogens.
The detection of a microbial invasion is typically swiftly followed by its engulfment by a phagocytic cell in all animals, including invertebrates and vertebrates. In the tissues across the body of vertebrates, macrophages are particularly prevalent in the lungs and stomach, two places where infections are most prone. Additionally, the liver, spleen, and connective tissues contain significant amounts. These long-lasting cells are among the first to come into contact with invasive pathogens and patrol the body's tissues.
Neutrophils, the second-largest family of phagocytic cells in vertebrates, are short-lived cells prevalent in blood but absent from healthy, normal tissues.
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