A host cell infected by a virus will activate the adaptive immune response through white blood cells that are called as lymphocytes.
There are two types of responses through cells: antibody responses and cell mediated immune responses. These responses are occur by different types of classes of white blood cells those are called as B cells and T cells.
These T lymphocytes use chemical messenger to activate other immune system cells so that the adaptive immune system can activate. It detect the infected cells and destroy the cell.
Antibody is a blood protein that is produced in body in response to the specific antigen.
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I would not take my word on this but i do think that, that is TRUE.
Humans have the thickest skin one the soles of feet(so we can not hurt our feet every time we take a step
we have eyelashes to keep dust and other particles out of our eyes
people in colder regions tend to have narrower eyes and nostrils to make sure heat isn't lost
Explanation:
Blood is a specialized body fluid. It has four main components:
- plasma,
- red blood cells,
- white blood cells,
- and platelets.
Blood has many different functions, including: transporting oxygen and nutrients to the lungs and tissues.
Because other animals maybe needed that animal for food and now they are gone, and because the wolf helped the environment