THE HUMAN IMMUNE SYSTEM
TYPES OF IMMUNITY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Due to prolong injection of antibodies into human body
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The presence of phagocytes to engulf the pathogens
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Increase in mast cells that help produce histamine
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Production of memory B cells that increase antibodies
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Detailed explanation-1: -Another hallmark of memory B cells is to display and secrete antibodies with a markedly higher affinity than those produced by primary plasma cells, as a result of somatic hypermutation and selection.
Detailed explanation-2: -Memory B cells can survive for decades, which gives them the capacity to respond to multiple exposures to the same antigen. The long-lasting survival is hypothesized to be a result of certain anti-apoptosis genes that are more highly expressed in memory B cells than other subsets of B cells.
Detailed explanation-3: -Active immunity is long term (sometimes lifelong) because memory cells with antigen-binding affinity maturation are produced during the lymphocyte differentiation and proliferation that occurs during the formation of an adaptive immune response.
Detailed explanation-4: -With the help of Memory B-cells, the second time your body sees that virus, it can do the same in thing 5 days. It also makes 100 times more antibodies than it did the first time. The faster your body makes antibodies, the quicker the virus can be destroyed.