Cells of the Second Line of Defense Called ________ Recognize

Question

Cells of the second line of defense called ________ recognize and kill virus-infected cells.
A) basophils
B) eosinophils
C) macrophages
D) NK cells
E) dendritic cells

Accepted Answer

NK cells, or natural killer cells, are part of the second line of defense and are responsible for recognizing and killing virus-infected cells. Basophils and eosinophils are types of white blood cells involved in allergic reactions and parasitic infections, respectively. Macrophages and dendritic cells are also part of the second line of defense, but their main roles are in phagocytosis and antigen presentation, respectively.