Question

33 multiple choice 10 points what defense mechanism responds to the presence of foreign antigens by initiating a cascade of reactions, resulting in inflammation and enhanced phagocytosis in the area? natural killer cells adaptive defenses interferon complement system

Explanation:

The complement system is a group of proteins in the blood that, when activated by the presence of foreign antigens, initiate a cascade of reactions leading to inflammation and enhanced phagocytosis. Natural killer cells directly kill virus - infected or cancerous cells. Adaptive defenses are antigen - specific immune responses. Interferon is a protein that warns nearby cells of viral infection.

Answer:

D. Complement system