Which of the following kinds of protein circulates in the blood and coats the surfaces of microbes to make them more susceptible to engulfment by phagocytic cells?

Question

Quizplus · Accepted Answer

Complement proteins circulate in the blood and can coat the surfaces of microbes, making them more susceptible to engulfment by phagocytic cells. Interferons are proteins produced by cells in response to viral infections and do not directly coat microbes. Prostaglandins are lipid molecules involved in inflammation and pain signaling. Antigens are molecules that can elicit an immune response.

Which of the Following Kinds of Protein Circulates in the Blood