Some complement proteins
A) induce antibody formation by phagocytic cells.
B) help trigger the inflammatory response.
C) are released by natural killer cells to attack cancer and virus-infected cells.
D) replace T cells in the cell-mediated response.

Question

Quizplus · Accepted Answer

Complement proteins are a group of proteins that work together to help trigger the inflammatory response. They can also directly attack pathogens and mark them for destruction by phagocytic cells.

Answer: C
 Natural killer cells release perforins and granzymes, not complement proteins, to attack cancer and virus-infected cells.

Therefore, the best choice is B only.

Some Complement Proteins