ANATOMY
LYMPHATIC SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which of the following is a nonspecific defense protein that inhibits bacterial growth by limiting iron?
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interferons
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transferrin
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phagocytes
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natural killer cells
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Explanation:
Detailed explanation-1: -Lactoferrin inhibits microbial growth by chemically binding and sequestering iron. This effectually starves many microbes that require iron for growth.
Detailed explanation-2: -Lactoferrin. Lactoferrin is an iron-binding protein that is secreted by serous epithelial cells and neutrophils that competes with bacteria for iron, thereby inhibiting bacterial growth.
Detailed explanation-3: -So, the correct answer is ‘Killer T-cells’.
Detailed explanation-4: -Given the absolute requirement for iron by virtually all human pathogens, an important facet of the innate immune system is to limit iron availability to invading microbes in a process termed nutritional immunity.
There is 1 question to complete.