IMMUNOLOGY

Detailed explanation-1: -The third line of defence is called the immune response and is SPECIFIC. It involves the production of two types of lymphocytes (B and T cells) which are specific to the invading particle. They work together to attack the pathogen.

Detailed explanation-2: -The third line defense aims at eliminating specific pathogens that have been encountered by the immune system previously (adaptive or acquired immune response). Instead of being restricted to the site of infection, the adaptive immune response occurs throughout the body.

Detailed explanation-3: -The body’s third line of defense is the immune response. This involves the lymphatic system. This system filters pathogens from lymph and produces lymphocytes. Lymphocytes are the key cells in the immune response.

Detailed explanation-4: -The third line of defence is made up of specialized white blood cells. You cannot leave feedback on historical work. Students can’t see this on their screen. There are thousands of types of pathogen and each type is unique.