IMMUNE SYSTEM:-
The resistant framework is the body's safeguard against diseases. The resistant framework assaults germs and helps keep us solid.
The two sorts of lymphocytes are B lymphocytes and T lymphocytes. Lymphocytes begin in the bone marrow and either remain there and develop into B cells, or go to the thymus organ to develop into T cells. B lymphocytes resemble the body's military insight framework — they discover their objectives and send protections to bolt onto them. Lymphocytes resemble the officers — they annihilate the intruders that the insight framework finds
WORK OF IMMUNE SYSTEM:-
At the point when the body faculties unfamiliar substances (called antigens), the insusceptible framework attempts to perceive the antigens and dispose of them.
B lymphocytes are set off to make antibodies (additionally called immunoglobulins). These proteins lock onto explicit antigens. After they're made, antibodies generally remain in our bodies in the event that we need to battle a similar germ once more. That is the reason somebody who becomes ill with an ailment, similar to chickenpox, for the most part won't become ill from it once more
This is likewise how inoculations (antibodies) forestall a few illnesses. A vaccination acquaints the body with an antigen in a manner that doesn't make somebody debilitated. However, it lets the body make antibodies that will shield the individual from future assault by the germ.
In spite of the fact that antibodies can perceive an antigen and lock onto it, they can't obliterate it without assistance. That is the activity of the T cells. They obliterate antigens labeled by antibodies or cells that are tainted or by one way or another changed. (Some T cells are really called "executioner cells.") T cells additionally help signal different cells (like phagocytes) to carry out their responsibilities.
THREE TYPES OF IMMUNE SYSTEM:-
1:Innate immunity
2:Adaptive immunity
3:Passive immunity
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