Question at position 9 Which of the following is an example of the specific immune response?Mast cells release histamineComplement proteins trigger opsonizationMembrane attack complexPlasma cells release IgGRelease of interferon from a virus-infected cell

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Question at position 9 Which of the following is an example of the specific immune response?Mast cells release histamineComplement proteins trigger opsonizationMembrane attack complexPlasma cells release IgGRelease of interferon from a virus-infected cell

BlackTom AI · Accepted Answer

To evaluate which option illustrates the specific immune response, I’ll examine how each choice relates to targeted, antigen-specific defense versus general, non-specific defenses.
Option 1: 'Mast cells release histamine' – This is a classic example of an immediate, non-specific inflammatory response. Histamine increases vascular permeability and attracts other immune cells, but it is not antigen-specific and does not involve targeted antibody production.
Option 2: 'Complement proteins trigger opsonization' – Opsonization helps phagocytes recognize and engulf pathogens, and while it can be activated by the classical pathway through antibodies, the complement system itself is part of the innate immune defense and can function independently of a specific adaptive response. It is not, by itself, the hallmark of the specific immune response.
Option 3: 'Membrane attack complex' – The membrane attack complex (MAC) forms pores in the membranes of certain pathogens as part of the complement system. Like opsonization, MAC action is a component of innate immunity and does not represent the production of antigen-specific antibodies.
Option 4: 'Plasma cells release IgG' – Plasma cells are differentiated B cells that secrete antibodies (such as IgG) that are specific to a particular antigen. This antibody production is the quintessential feature of the adaptive (specific) immune response, enabling targeted neutralization and clearance of pathogens.
Option 5: 'Release of interferon from a virus-infected cell' – Interferons are signaling molecules produced by infected cells to alert neighboring cells and coordinate an antiviral state. While important for defense, this is part of the innate, innate-immune signaling response rather than a specific, antibody-mediated response.
In summary, the only option that aligns with the specific (adaptive) immune response is the one involving antigen-specific antibody production by plasma cells, namely IgG release.

Question at position 9 Which of the following is an example of the specific immune response?Mast cells release histamineComplement proteins trigger opsonizationMembrane attack complexPlasma cells release IgGRelease of interferon from a virus-infected cell

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