Example for (i)naturally acquired active immunity (ii) artificially acquired active immunity (iii)naturally acquired passive immunity (iv) artificially acquired passive immunity
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natural acquired active immunity :
immunity acquired due to infection is called as Natural acquired active immunity .it is developed after entry of pathogens in the body .
artificial acquired active immunity :
this immunity is acquired artificially by vaccination . vaccine contain dead or alive but attenuated pathogens out oxides consisting of microbial components or toxin isecret by the pathogens.
natural acquired passive immunity :
birth maternal antibodies are transferred from mother to foetus through Placenta after birth antibodies are transferred from mother to infant through claustrum.
artificial acquired passive immunity :
immunity is developed by injecting previously prepared antibodies using serum for humans are animals
Answer:
Innate Immunity :
Innate immunity is inherited and it acts as the first response to any pathogen invasion.
Skin, tears, saliva, neutrophils, PMC, Natural Killer Cells etc are examples of innate immunity
Further mucus in gastrointestinal tract, respiratory tract and nasal passage traps pathogens.
Acquired Immunity :
Immune responses which are a result of adaptation or injection of vaccines and antibiotics during the course of life time.
Passive Immunity :
Vaccine is essentially traces of decaying virus or certain proteins injected into the body for the sake of recognition (Memory Cells of Lymphatic System) and ensue a stronger secondary response in future.
Similarly newborns receive IgA more breast milk.
In other words, Immunity from external sources is passive immunization.
Active Immunity :
Suppose a pathogen makes its way into the human body, the B cells initiate a short lived primary immune response.
The same information is stored in memory cells found in lymph nodes.
If the same pathogen were to call the human body it's home, a secondary immune response is initiated by T Cells and Memory Cells to drive away the nemesis.
Vaccines work on the same principle.
Autoimmunity :
Autoimmunity is a dire condition wherein T Cells are unable to recognize self cells and direct antibodies to act on host antigens weakening the immune system.