Why is a second weapon system (specifically cell-mediated immunity)in addition to humoral immunity needed to defend the body against invading pathogens?
A)Humoral immunity is ineffective against antibodies.
B)Antibodies are not effective against pathogens that are present inside cells.
C)Antibodies are not effective against pathogens that are present outside cells.
D)If used too often,antibodies can attack red blood cells.
E)Antibodies are typically ineffective against bacteria,while they work well against viruses.

Question

Quizplus · Accepted Answer

Humoral immunity involves the production of antibodies that can recognize and neutralize antigens that are present outside of cells, such as bacteria and viruses in the bloodstream or other body fluids. However, if a pathogen enters a host cell, antibodies are not effective in reaching and neutralizing it. This is where cell-mediated immunity comes in, which involves specialized immune cells that can recognize and destroy infected cells or tumor cells that do not display their antigens on their surface. Together, humoral and cell-mediated immunity provide a more comprehensive defense against invading pathogens.

Why Is a Second Weapon System (Specifically Cell-Mediated Immunity)in Addition