What Would Be the Outcome If a Naive B Cell

question 58

Multiple Choice

What would be the outcome if a naive B cell were to bind to pathogen coated with specific antibody made by an effector B cell in a primary immune response using FcγRIIB1,and simultaneously bind to the same pathogen using its B-cell receptor?

• A)a positive signal leading to the production of low-affinity IgM antibodies
• B)a positive signal leading to isotype switching and the production of IgG,IgA,or IgE antibodies
• C)a positive signal leading to somatic hypermutation and the production of high-affinity IgM antibodies
• D)a negative signal leading to inhibition of the production of low-affinity IgM antibodies
• E)a negative signal leading to apoptosis.

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Definitions:

Initiation Phase

The first phase in a project where its feasibility, scope, and objectives are determined, leading to its formal launch.

Data

Information collected for reference or analysis, presented as numbers, facts, or text, which can be used for calculating, reasoning, or planning.

Design

The process of creating a plan or convention for the construction of an object, system, or measurable human interaction.

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A systematic examination of a quality system carried out by an internal or external quality auditor or audit team.