The vaccine for tuberculosis contains a dead form of the tuberculosis bacterium. how does the body respond to the vaccine? How is passive immunity brought about? When is it needed?
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similar to the other vaccines lightweight process contain a form of delta college in bacteria removed its nucleus this helps our body to develop immunity and fight against real bacteria
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After digestion of bacterial cells some of its surface antigens are displayed by macrophages on their membrane so that circulating lymphocytes become exposed to the foreign antigens.
Once exposed, lymphocytes will remember the foreign antigen (in this case surface antigen of tuberculosis bacterium) and would be able to produce specific antibodies against the germs in all events of future invasions.
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