Which statement correctly describes how your body defends itself against infectious disease?   the first line of defense is the skin; the second line of defense involves the immune system recognizing antigens found on the cell of a foreign invader; the third line of defense involves specialized cells that will attack invaders it sees as foreign.  the first line of defense is composed of specialized cells that attack foreign invaders. the second line of defense is the immune system. the third line of defense sends in macrophages and neutrophils to engulf and attack the foreign cells. the fist line of defense is the intact skin. the second line of defense involves specialized cells like neutrophils and macrophages, which will destroy foreign invaders. the third line of defense is specific and the immune system is able to recognize foreign antigens on the cells of the invader and target these cells for destruction.  the first line of defense involves the recognition of invaders. the immune system recognizes invaders because they have antigens on their surface. the second line of defense will send in special t-cells and b-cells to destroy the invaders. the third line of defense involves the creation of a special memory to create a barrier to future invasions.