Modulation of immunity power of the body is a very strong weapon to combat diseases. Presently, vaccination is considered the only weapon in this field. Vaccination means the introduction of some foreign antigens (generally of infective organisms) inside the body of a human or animal to stimulate the immune system of the body to develop protective power against those antigens in the future. Production of protective antibodies along with sensitization of the cells engaged in this process for the future fight is the main target of vaccination. The adaptive or acquired immunity section of the individuals is stimulated to perform the work through vaccination.

But the other arm of the immunity system, the non-specific immunity can also be utilized to reach the same target. The non-specific defense system of the body comprises different barrier functions of the body, action of phagocytic cells, natural killer cells, T lymphocytes, modification of activities of cytokines, etc. The activated non-specific immunity can also protect individuals from catching an infection or can assist in the reduction of severity of the disease symptoms….

From:

http://www.animalmedicalresearch.org/Vol.10_Issue-2_December_2020/SUCCULENT%20BIOMEDICINES.pdf

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