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Immunity categories
There are several immunity categories:
- Nonspecific defenses: these work against all foreign matter and pathogens
- Specific defenses: these are specialized in fighting against particular threats
- Innate immunity: natural immunity that protects one from birth until death
- Acquired immunity: it is the third line of defense, which offers protection against specific types of pathogens.
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Active immunity features
- The need to be exposed to a pathogen or to the antigen of a pathogen, which leads to the production of antibodies
- The cells involved are of three types: T cells, B cells and anti-presenting cells
- Immunity is acquired after severa...
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Active immunity
By active immunity, we generally understand the resistance that our immune system shows against pathogens.
By the so-called 'clonal selection', enough antibodies are built up in order to help our organism fight off colds or different diseases.
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Our Immunity
Immunity is defined as the set of defenses, that our bodies possess, which has the role to protect us against pathogens and to fight against infections.
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Passive immunity
Passive immunity refers to the creation of immunity by introducing antibodies from outside the organism, such as the injection of antivenom after having been bitten by a snake.
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Passive immunity features
Among the features of passive immunity, the most known are:
- This type of immunity does not require exposure to antigen or to an infectious agent
- The response to an infectious agent is immediate
- The immunity is effective on s...
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Innate Immune System: The Body's Immediate, Generalized Line of Defense
The innate immune system is the body's initial line of defense against pathogens, offering a rapid, generalized response to foreign invaders. Unlike the adaptive immune system, which learns and remembers specific pathogens, the innate system responds immediately to a wide...
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