_____ identify antigens and then multiply and trigger the production of other kinds of immune cells.

A) Helper T-cells
B) Natural killer T-cells
C) B-cells
D) Antibodies

Helper T-Cells

A type of white blood cell that plays a critical role in the immune system by activating and directing other immune cells.

Antigens

Substances that provoke an immune response in the body, especially the production of antibodies.

Immune Cells

Cells within the body's immune system involved in defending the body against infectious disease and foreign invaders.