Answer:bathe correct answer is A,B and C.
WHITE BLOOD CELLS,ANTIGENS AND ANTIBODIES.
Explanation: The immune system is just a mobile system the circulates round the body to fight foreign Invaders.
Some fixed anatomical structures are important to the immune system, structures like the bone marrow,thymus gland,lymph nodes and the lymphatic vasculature,spleen and the liver. All these structures work together to help the body fight invading foreign bodies that comes to attack the body.
Normally,the immune response is broken down into 4 basic components.
The first phase is when the cells of the body recognize pathogens,these cells are that of the innate immune system, recognition of this pathogens will be followed by the release of cytokin (large proteins), a complement release and further phagocytosis of the antigen.
Following this,the innate immune system will trigger an inflammatory response,this inflammatory response is acute because of the release of prostaglandins inorder to control the infection.
At this stage,there will be presentation of antigen followed by the activation of T helper cells,these cells are specific in nature.
Finally,a targeted antigen specific immune response will be will be coordinated by CD4 helper T cells.
This will involve two adaptive cells systems; A cell mediated immunity from cytotoxic CD8 immune cells and humoral immunity from antibodies and B cells.
