IMMUNOLOGY

IMMUNE RESPONSE

CLASSICAL ALTERNATE AND LECTIN PATHWAYS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is defensive activities based on the action of pre-committed T-lymphocytes that move into action to kill the invader or activate other parts of the immune system through the production of chemicals which directly fight (act to kill) the antigen (microbe) or regulate immune response?
A
Cell-Mediated Response
B
Humoral Response
C
Cytokine Products of Cells
D
Chemical Mediators
Explanation: 

Detailed explanation-1: -While B-cells produce antibodies to fight infection, T-cells protect people from getting infected by destroying cancerous and infected cells.

Detailed explanation-2: -Armed effector cytotoxic CD8 T cells are essential in host defense against pathogens that live in the cytosol, the commonest of which are viruses. These cytotoxic T cells can kill any cell harboring such pathogens by recognizing foreign peptides that are transported to the cell surface bound to MHC class I molecules.

Detailed explanation-3: -Specific immune responses are triggered by antigens. Antigens are usually found on the surface of pathogens and are unique to that particular pathogen. The immune system responds to antigens by producing cells that directly attack the pathogen, or by producing special proteins called antibodies.

There is 1 question to complete.