IMMUNOLOGY

Detailed explanation-1: -Neutrophils are the first cells to reach the site of infection, attracted by chemotactic factors such as complement, with their predominant role being phagocytosis.

Detailed explanation-2: -Typically, neutrophils are the first responders to be recruited and have a higher microbicidal activity; whereas monocytes/macrophages are recruited later on.

Detailed explanation-3: -Because neutrophils are the first type of leukocytes to arrive at affected tissues and display potent microbicidal functions, they have been classically viewed as the first line of defense. In this view, neutrophils only destroy invading pathogens and then quietly die at the site of infection.